31401420142400 has 168 divisors, whose sum is σ = 96333032404416. Its totient is φ = 9787455590400.

The previous prime is 31401420142399. The next prime is 31401420142403. The reversal of 31401420142400 is 424102410413.

It is a self number, because there is not a number n which added to its sum of digits gives 31401420142400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401420142403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127317629 + ... + 127564028.

Almost surely, 2^{31401420142400} is an apocalyptic number.

It is an amenable number.

31401420142400 is an abundant number, since it is smaller than the sum of its proper divisors (64931612262016).

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

31401420142400 is a wasteful number, since it uses less digits than its factorization.

31401420142400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254881697 (or 254881682 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 31401420142400 its reverse (424102410413), we get a palindrome (31825522552813).

The spelling of 31401420142400 in words is "thirty-one trillion, four hundred one billion, four hundred twenty million, one hundred forty-two thousand, four hundred".