31023230212002 has 64 divisors (see below), whose sum is σ = 74042858004480. Its totient is φ = 8472719158464.

The previous prime is 31023230212001. The next prime is 31023230212031. The reversal of 31023230212002 is 20021203232013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 31023230212002.

It is not an unprimeable number, because it can be changed into a prime (31023230212001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9313002 + ... + 12197477.

It is an arithmetic number, because the mean of its divisors is an integer number (1156919656320).

Almost surely, 2^{31023230212002} is an apocalyptic number.

31023230212002 is an abundant number, since it is smaller than the sum of its proper divisors (43019627792478).

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

31023230212002 is a wasteful number, since it uses less digits than its factorization.

31023230212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21512007.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31023230212002 its reverse (20021203232013), we get a palindrome (51044433444015).

The spelling of 31023230212002 in words is "thirty-one trillion, twenty-three billion, two hundred thirty million, two hundred twelve thousand, two".