31130555525144 has 16 divisors (see below), whose sum is σ = 58426296747720. Its totient is φ = 15550209725760.

The previous prime is 31130555525119. The next prime is 31130555525149. The reversal of 31130555525144 is 44152555503113.

It is a super-2 number, since 2×31130555525144² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31130555525095 and 31130555525104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130555525149) 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, 1883495822 + ... + 1883512349.

Almost surely, 2^{31130555525144} is an apocalyptic number.

It is an amenable number.

31130555525144 is a deficient number, since it is larger than the sum of its proper divisors (27295741222576).

31130555525144 is a wasteful number, since it uses less digits than its factorization.

31130555525144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767009210 (or 3767009206 counting only the distinct ones).

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 31130555525144 in words is "thirty-one trillion, one hundred thirty billion, five hundred fifty-five million, five hundred twenty-five thousand, one hundred forty-four".