31402334421 has 40 divisors (see below), whose sum is σ = 48064092384. Its totient is φ = 20420981280.

The previous prime is 31402334377. The next prime is 31402334437. The reversal of 31402334421 is 12443320413.

31402334421 is a `hidden beast` number, since 3 + 1 + 4 + 0 + 233 + 4 + 421 = 666.

It is not a de Polignac number, because 31402334421 - 2⁶ = 31402334357 is a prime.

It is a super-2 number, since 2×31402334421² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402334321) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2819155 + ... + 2830271.

Almost surely, 2^31402334421 is an apocalyptic number.

It is an amenable number.

31402334421 is a deficient number, since it is larger than the sum of its proper divisors (16661757963).

31402334421 is a wasteful number, since it uses less digits than its factorization.

31402334421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11983 (or 11974 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 31402334421 its reverse (12443320413), we get a palindrome (43845654834).

The spelling of 31402334421 in words is "thirty-one billion, four hundred two million, three hundred thirty-four thousand, four hundred twenty-one".