Search a number
-
+
131110957 = 1311000847
BaseRepresentation
bin1111101000010…
…01100000101101
3100010201010102101
413310021200231
5232031022312
621002055101
73151265455
oct764114055
9303633371
10131110957
116801066a
1237aaa491
1321217363
14135acd65
15b79ca57
hex7d0982d

131110957 has 4 divisors (see below), whose sum is σ = 132111936. Its totient is φ = 130109980.

The previous prime is 131110939. The next prime is 131110979. The reversal of 131110957 is 759011131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 759011131 = 4716149173.

It is a cyclic number.

It is not a de Polignac number, because 131110957 - 27 = 131110829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131110927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500293 + ... + 500554.

It is an arithmetic number, because the mean of its divisors is an integer number (33027984).

Almost surely, 2131110957 is an apocalyptic number.

It is an amenable number.

131110957 is a deficient number, since it is larger than the sum of its proper divisors (1000979).

131110957 is a wasteful number, since it uses less digits than its factorization.

131110957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000978.

The product of its (nonzero) digits is 945, while the sum is 28.

The square root of 131110957 is about 11450.3692953546. The cubic root of 131110957 is about 508.0186574771.

The spelling of 131110957 in words is "one hundred thirty-one million, one hundred ten thousand, nine hundred fifty-seven".

Divisors: 1 131 1000847 131110957