31404421432400 has 60 divisors (see below), whose sum is σ = 75690174302652. Its totient is φ = 12521635077120.

The previous prime is 31404421432369. The next prime is 31404421432469. The reversal of 31404421432400 is 423412440413.

It can be written as a sum of positive squares in 6 ways, for example, as 1180551787024 + 30223869645376 = 1086532^2 + 5497624^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125291819 + ... + 125542218.

Almost surely, 2^{31404421432400} is an apocalyptic number.

It is an amenable number.

31404421432400 is an abundant number, since it is smaller than the sum of its proper divisors (44285752870252).

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

31404421432400 is a wasteful number, since it uses less digits than its factorization.

31404421432400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250834368 (or 250834357 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 31404421432400 its reverse (423412440413), we get a palindrome (31827833872813).

The spelling of 31404421432400 in words is "thirty-one trillion, four hundred four billion, four hundred twenty-one million, four hundred thirty-two thousand, four hundred".