9131357044 has 12 divisors (see below), whose sum is σ = 16003483524. Its totient is φ = 4558933184.

The previous prime is 9131356987. The next prime is 9131357047. The reversal of 9131357044 is 4407531319.

It can be written as a sum of positive squares in 2 ways, for example, as 6965571600 + 2165785444 = 83460^2 + 46538^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9131356994 and 9131357012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9131357047) 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, 1683289 + ... + 1688704.

It is an arithmetic number, because the mean of its divisors is an integer number (1333623627).

Almost surely, 2^9131357044 is an apocalyptic number.

It is an amenable number.

9131357044 is a deficient number, since it is larger than the sum of its proper divisors (6872126480).

9131357044 is a wasteful number, since it uses less digits than its factorization.

9131357044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372674 (or 3372672 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 9131357044 is about 95558.1343685612. The cubic root of 9131357044 is about 2090.1547502610.

The spelling of 9131357044 in words is "nine billion, one hundred thirty-one million, three hundred fifty-seven thousand, forty-four".