31492011 has 4 divisors (see below), whose sum is σ = 41989352. Its totient is φ = 20994672.

The previous prime is 31491989. The next prime is 31492031. The reversal of 31492011 is 11029413.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31492011 - 2¹¹ = 31489963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31492031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5248666 + ... + 5248671.

It is an arithmetic number, because the mean of its divisors is an integer number (10497338).

Almost surely, 2^31492011 is an apocalyptic number.

31492011 is a deficient number, since it is larger than the sum of its proper divisors (10497341).

31492011 is a wasteful number, since it uses less digits than its factorization.

31492011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10497340.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 31492011 is about 5611.7743183417. The cubic root of 31492011 is about 315.7912784736.

The spelling of 31492011 in words is "thirty-one million, four hundred ninety-two thousand, eleven".