31426424 has 8 divisors (see below), whose sum is σ = 58924560. Its totient is φ = 15713208.

The previous prime is 31426411. The next prime is 31426471. The reversal of 31426424 is 42462413.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 31426393 and 31426402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964144 + ... + 1964159.

It is an arithmetic number, because the mean of its divisors is an integer number (7365570).

Almost surely, 2^31426424 is an apocalyptic number.

It is an amenable number.

31426424 is a deficient number, since it is larger than the sum of its proper divisors (27498136).

31426424 is a wasteful number, since it uses less digits than its factorization.

31426424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3928309 (or 3928305 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

The square root of 31426424 is about 5605.9275771276. The cubic root of 31426424 is about 315.5718979906.

Adding to 31426424 its reverse (42462413), we get a palindrome (73888837).

The spelling of 31426424 in words is "thirty-one million, four hundred twenty-six thousand, four hundred twenty-four".