31419939 has 16 divisors (see below), whose sum is σ = 44391680. Its totient is φ = 19712160.

The previous prime is 31419907. The next prime is 31419967. The reversal of 31419939 is 93991413.

It is not a de Polignac number, because 31419939 - 2⁵ = 31419907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31419897 and 31419906.

It is not an unprimeable number, because it can be changed into a prime (31419979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7194 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (2774480).

Almost surely, 2^31419939 is an apocalyptic number.

31419939 is a deficient number, since it is larger than the sum of its proper divisors (12971741).

31419939 is a wasteful number, since it uses less digits than its factorization.

31419939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690.

The product of its digits is 26244, while the sum is 39.

The square root of 31419939 is about 5605.3491416682. The cubic root of 31419939 is about 315.5501898834.

The spelling of 31419939 in words is "thirty-one million, four hundred nineteen thousand, nine hundred thirty-nine".