31479039 has 6 divisors (see below), whose sum is σ = 45469736. Its totient is φ = 20986020.

The previous prime is 31479031. The next prime is 31479061. The reversal of 31479039 is 93097413.

It is not a de Polignac number, because 31479039 - 2³ = 31479031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31478994 and 31479012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31479031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1748827 + ... + 1748844.

Almost surely, 2^31479039 is an apocalyptic number.

31479039 is a deficient number, since it is larger than the sum of its proper divisors (13990697).

31479039 is a wasteful number, since it uses less digits than its factorization.

31479039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497677 (or 3497674 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 31479039 is about 5610.6184151125. The cubic root of 31479039 is about 315.7479129033.

The spelling of 31479039 in words is "thirty-one million, four hundred seventy-nine thousand, thirty-nine".