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132121031 = 718874433
BaseRepresentation
bin1111110000000…
…00000111000111
3100012121102222112
413320000013013
5232310333111
621035451235
73163003340
oct770000707
9305542875
10132121031
1168640539
12382b6b1b
13214ac033
14137930c7
15b8ebe8b
hex7e001c7

132121031 has 4 divisors (see below), whose sum is σ = 150995472. Its totient is φ = 113246592.

The previous prime is 132121027. The next prime is 132121091. The reversal of 132121031 is 130121231.

132121031 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130121231 = 294486939.

It is a cyclic number.

It is not a de Polignac number, because 132121031 - 22 = 132121027 is a prime.

It is a super-2 number, since 2×1321210312 = 34911933665005922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 132120997 and 132121015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132121091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9437210 + ... + 9437223.

It is an arithmetic number, because the mean of its divisors is an integer number (37748868).

Almost surely, 2132121031 is an apocalyptic number.

132121031 is a deficient number, since it is larger than the sum of its proper divisors (18874441).

132121031 is an equidigital number, since it uses as much as digits as its factorization.

132121031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18874440.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 132121031 is about 11494.3912844483. The cubic root of 132121031 is about 509.3199072788.

Adding to 132121031 its reverse (130121231), we get a palindrome (262242262).

The spelling of 132121031 in words is "one hundred thirty-two million, one hundred twenty-one thousand, thirty-one".

Divisors: 1 7 18874433 132121031