31213223341401 has 32 divisors (see below), whose sum is σ = 42435093841920. Its totient is φ = 20403775324800.

The previous prime is 31213223341397. The next prime is 31213223341429. The reversal of 31213223341401 is 10414332231213.

It is not a de Polignac number, because 31213223341401 - 2² = 31213223341397 is a prime.

It is a super-2 number, since 2×31213223341401² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31213223341451) 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, 25208716 + ... + 26417906.

It is an arithmetic number, because the mean of its divisors is an integer number (1326096682560).

Almost surely, 2^{31213223341401} is an apocalyptic number.

It is an amenable number.

31213223341401 is a deficient number, since it is larger than the sum of its proper divisors (11221870500519).

31213223341401 is a wasteful number, since it uses less digits than its factorization.

31213223341401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209957.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 31213223341401 its reverse (10414332231213), we get a palindrome (41627555572614).

The spelling of 31213223341401 in words is "thirty-one trillion, two hundred thirteen billion, two hundred twenty-three million, three hundred forty-one thousand, four hundred one".