31400421352 has 16 divisors (see below), whose sum is σ = 59621054400. Its totient is φ = 15501473520.

The previous prime is 31400421323. The next prime is 31400421359. The reversal of 31400421352 is 25312400413.

It is a super-2 number, since 2×31400421352² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31400421359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24841474 + ... + 24842737.

It is an arithmetic number, because the mean of its divisors is an integer number (3726315900).

Almost surely, 2^31400421352 is an apocalyptic number.

It is an amenable number.

31400421352 is a deficient number, since it is larger than the sum of its proper divisors (28220633048).

31400421352 is a wasteful number, since it uses less digits than its factorization.

31400421352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49684296 (or 49684292 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 31400421352 its reverse (25312400413), we get a palindrome (56712821765).

The spelling of 31400421352 in words is "thirty-one billion, four hundred million, four hundred twenty-one thousand, three hundred fifty-two".