31633240012 has 12 divisors (see below), whose sum is σ = 60390731016. Its totient is φ = 14378745440.

The previous prime is 31633239971. The next prime is 31633240019. The reversal of 31633240012 is 21004233613.

It is not an unprimeable number, because it can be changed into a prime (31633240019) 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, 359468593 + ... + 359468680.

It is an arithmetic number, because the mean of its divisors is an integer number (5032560918).

Almost surely, 2^31633240012 is an apocalyptic number.

It is an amenable number.

31633240012 is a deficient number, since it is larger than the sum of its proper divisors (28757491004).

31633240012 is a wasteful number, since it uses less digits than its factorization.

31633240012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718937288 (or 718937286 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31633240012 its reverse (21004233613), we get a palindrome (52637473625).

The spelling of 31633240012 in words is "thirty-one billion, six hundred thirty-three million, two hundred forty thousand, twelve".