31079481 has 8 divisors (see below), whose sum is σ = 41484864. Its totient is φ = 20696880.

The previous prime is 31079471. The next prime is 31079507. The reversal of 31079481 is 18497013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31079481 - 2¹⁵ = 31046713 is a prime.

It is a super-2 number, since 2×31079481² = 1931868278458722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31079401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2205 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (5185608).

Almost surely, 2^31079481 is an apocalyptic number.

It is an amenable number.

31079481 is a deficient number, since it is larger than the sum of its proper divisors (10405383).

31079481 is a wasteful number, since it uses less digits than its factorization.

31079481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11391.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 31079481 is about 5574.8973981590. The cubic root of 31079481 is about 314.4063093186.

The spelling of 31079481 in words is "thirty-one million, seventy-nine thousand, four hundred eighty-one".