31203012102 has 8 divisors (see below), whose sum is σ = 62406024216. Its totient is φ = 10401004032.

The previous prime is 31203012079. The next prime is 31203012109. The reversal of 31203012102 is 20121030213.

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

31203012102 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31203012109) 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, 2600251003 + ... + 2600251014.

It is an arithmetic number, because the mean of its divisors is an integer number (7800753027).

Almost surely, 2^31203012102 is an apocalyptic number.

31203012102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31203012102 is a wasteful number, since it uses less digits than its factorization.

31203012102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200502022.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31203012102 its reverse (20121030213), we get a palindrome (51324042315).

The spelling of 31203012102 in words is "thirty-one billion, two hundred three million, twelve thousand, one hundred two".