31133112330 has 32 divisors (see below), whose sum is σ = 75985905600. Its totient is φ = 8161448192.

The previous prime is 31133112277. The next prime is 31133112331. The reversal of 31133112330 is 3321133113.

It is a junction number, because it is equal to n+sod(n) for n = 31133112297 and 31133112306.

It is not an unprimeable number, because it can be changed into a prime (31133112331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8792895 + ... + 8796434.

It is an arithmetic number, because the mean of its divisors is an integer number (2374559550).

Almost surely, 2^31133112330 is an apocalyptic number.

31133112330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31133112330 is an abundant number, since it is smaller than the sum of its proper divisors (44852793270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31133112330 is a wasteful number, since it uses less digits than its factorization.

31133112330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17589398.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31133112330 its reverse (3321133113), we get a palindrome (34454245443).

The spelling of 31133112330 in words is "thirty-one billion, one hundred thirty-three million, one hundred twelve thousand, three hundred thirty".