31401431421400 has 24 divisors (see below), whose sum is σ = 73008328055220. Its totient is φ = 12560572568480.

The previous prime is 31401431421377. The next prime is 31401431421407. The reversal of 31401431421400 is 412413410413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401431421407) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 78503578354 + ... + 78503578753.

Almost surely, 2^{31401431421400} is an apocalyptic number.

It is an amenable number.

31401431421400 is an abundant number, since it is smaller than the sum of its proper divisors (41606896633820).

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

31401431421400 is a wasteful number, since it uses less digits than its factorization.

31401431421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157007157123 (or 157007157114 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 31401431421400 its reverse (412413410413), we get a palindrome (31813844831813).

The spelling of 31401431421400 in words is "thirty-one trillion, four hundred one billion, four hundred thirty-one million, four hundred twenty-one thousand, four hundred".