31213223341400 has 48 divisors (see below), whose sum is σ = 72571408053000. Its totient is φ = 12485175137280.

The previous prime is 31213223341397. The next prime is 31213223341429. The reversal of 31213223341400 is 414332231213.

It is a super-2 number, since 2×31213223341400² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23205704 + ... + 24513896.

Almost surely, 2^{31213223341400} is an apocalyptic number.

It is an amenable number.

31213223341400 is an abundant number, since it is smaller than the sum of its proper divisors (41358184711600).

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

31213223341400 is a wasteful number, since it uses less digits than its factorization.

31213223341400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427508 (or 1427499 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 31213223341400 its reverse (414332231213), we get a palindrome (31627555572613).

The spelling of 31213223341400 in words is "thirty-one trillion, two hundred thirteen billion, two hundred twenty-three million, three hundred forty-one thousand, four hundred".