31120133131 has 8 divisors (see below), whose sum is σ = 32195206800. Its totient is φ = 30045190560.

The previous prime is 31120133111. The next prime is 31120133159. The reversal of 31120133131 is 13133102113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31120133131 - 2¹¹ = 31120131083 is a prime.

It is a super-2 number, since 2×31120133131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31120133099 and 31120133108.

It is not an unprimeable number, because it can be changed into a prime (31120133111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923896 + ... + 956986.

It is an arithmetic number, because the mean of its divisors is an integer number (4024400850).

Almost surely, 2^31120133131 is an apocalyptic number.

31120133131 is a deficient number, since it is larger than the sum of its proper divisors (1075073669).

31120133131 is a wasteful number, since it uses less digits than its factorization.

31120133131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65549.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31120133131 its reverse (13133102113), we get a palindrome (44253235244).

The spelling of 31120133131 in words is "thirty-one billion, one hundred twenty million, one hundred thirty-three thousand, one hundred thirty-one".