31213230020002 has 16 divisors (see below), whose sum is σ = 48358709828352. Its totient is φ = 15094254810960.

The previous prime is 31213230019999. The next prime is 31213230020009. The reversal of 31213230020002 is 20002003231213.

It is not an unprimeable number, because it can be changed into a prime (31213230020009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148577608 + ... + 148787539.

It is an arithmetic number, because the mean of its divisors is an integer number (3022419364272).

Almost surely, 2^{31213230020002} is an apocalyptic number.

31213230020002 is a deficient number, since it is larger than the sum of its proper divisors (17145479808350).

31213230020002 is a wasteful number, since it uses less digits than its factorization.

31213230020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297366873.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31213230020002 its reverse (20002003231213), we get a palindrome (51215233251215).

The spelling of 31213230020002 in words is "thirty-one trillion, two hundred thirteen billion, two hundred thirty million, twenty thousand, two".