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11925031 = 103115777
BaseRepresentation
bin101101011111…
…011000100111
3211102212001211
4231133120213
511023100111
61103332251
7203234566
oct55373047
924385054
1011925031
1168054a8
123bb1087
132616b41
141825bdd
1510a8521
hexb5f627

11925031 has 4 divisors (see below), whose sum is σ = 12040912. Its totient is φ = 11809152.

The previous prime is 11925029. The next prime is 11925037. The reversal of 11925031 is 13052911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13052911 = 73178807.

It is a cyclic number.

It is not a de Polignac number, because 11925031 - 21 = 11925029 is a prime.

It is a super-2 number, since 2×119250312 = 284412728701922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11924993 and 11925011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11925037) 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, 57786 + ... + 57991.

It is an arithmetic number, because the mean of its divisors is an integer number (3010228).

Almost surely, 211925031 is an apocalyptic number.

11925031 is a deficient number, since it is larger than the sum of its proper divisors (115881).

11925031 is a wasteful number, since it uses less digits than its factorization.

11925031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115880.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 11925031 is about 3453.2638184767. The cubic root of 11925031 is about 228.4650850735.

Adding to 11925031 its reverse (13052911), we get a palindrome (24977942).

The spelling of 11925031 in words is "eleven million, nine hundred twenty-five thousand, thirty-one".

Divisors: 1 103 115777 11925031