31215412211234 has 32 divisors (see below), whose sum is σ = 48421974182400. Its totient is φ = 15083973801792.

The previous prime is 31215412211189. The next prime is 31215412211237. The reversal of 31215412211234 is 43211221451213.

It is a self number, because there is not a number n which added to its sum of digits gives 31215412211234.

It is not an unprimeable number, because it can be changed into a prime (31215412211237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1239989 + ... + 7998024.

It is an arithmetic number, because the mean of its divisors is an integer number (1513186693200).

Almost surely, 2^{31215412211234} is an apocalyptic number.

31215412211234 is a deficient number, since it is larger than the sum of its proper divisors (17206561971166).

31215412211234 is a wasteful number, since it uses less digits than its factorization.

31215412211234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9238514.

The product of its digits is 11520, while the sum is 32.

Adding to 31215412211234 its reverse (43211221451213), we get a palindrome (74426633662447).

The spelling of 31215412211234 in words is "thirty-one trillion, two hundred fifteen billion, four hundred twelve million, two hundred eleven thousand, two hundred thirty-four".