31403233012 has 12 divisors (see below), whose sum is σ = 54982055296. Its totient is φ = 15694074360.

The previous prime is 31403232989. The next prime is 31403233019. The reversal of 31403233012 is 21033230413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31403233019) 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, 1876164 + ... + 1892827.

Almost surely, 2^31403233012 is an apocalyptic number.

It is an amenable number.

31403233012 is a deficient number, since it is larger than the sum of its proper divisors (23578822284).

31403233012 is a wasteful number, since it uses less digits than its factorization.

31403233012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771078 (or 3771076 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31403233012 its reverse (21033230413), we get a palindrome (52436463425).

The spelling of 31403233012 in words is "thirty-one billion, four hundred three million, two hundred thirty-three thousand, twelve".