31133233132 has 6 divisors (see below), whose sum is σ = 54483157988. Its totient is φ = 15566616564.

The previous prime is 31133233091. The next prime is 31133233139. The reversal of 31133233132 is 23133233113.

It is a junction number, because it is equal to n+sod(n) for n = 31133233097 and 31133233106.

It is not an unprimeable number, because it can be changed into a prime (31133233139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3891654138 + ... + 3891654145.

Almost surely, 2^31133233132 is an apocalyptic number.

It is an amenable number.

31133233132 is a deficient number, since it is larger than the sum of its proper divisors (23349924856).

31133233132 is a wasteful number, since it uses less digits than its factorization.

31133233132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783308287 (or 7783308285 counting only the distinct ones).

The product of its digits is 2916, while the sum is 25.

Adding to 31133233132 its reverse (23133233113), we get a palindrome (54266466245).

The spelling of 31133233132 in words is "thirty-one billion, one hundred thirty-three million, two hundred thirty-three thousand, one hundred thirty-two".