31231321022002 has 64 divisors (see below), whose sum is σ = 51136538229504. Its totient is φ = 14247231989760.

The previous prime is 31231321021997. The next prime is 31231321022063. The reversal of 31231321022002 is 20022012313213.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1108147603 + ... + 1108175785.

It is an arithmetic number, because the mean of its divisors is an integer number (799008409836).

Almost surely, 2^{31231321022002} is an apocalyptic number.

31231321022002 is a deficient number, since it is larger than the sum of its proper divisors (19905217207502).

31231321022002 is a wasteful number, since it uses less digits than its factorization.

31231321022002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33283.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31231321022002 its reverse (20022012313213), we get a palindrome (51253333335215).

The spelling of 31231321022002 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred twenty-one million, twenty-two thousand, two".