31486051 has 4 divisors (see below), whose sum is σ = 31515952. Its totient is φ = 31456152.

The previous prime is 31486033. The next prime is 31486087. The reversal of 31486051 is 15068413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15068413 = 271 ⋅55603.

It is a cyclic number.

It is not a de Polignac number, because 31486051 - 2¹⁵ = 31453283 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (31486451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13311 + ... + 15496.

It is an arithmetic number, because the mean of its divisors is an integer number (7878988).

Almost surely, 2^31486051 is an apocalyptic number.

31486051 is a deficient number, since it is larger than the sum of its proper divisors (29901).

31486051 is a wasteful number, since it uses less digits than its factorization.

31486051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29900.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 31486051 is about 5611.2432668705. The cubic root of 31486051 is about 315.7713555926.

The spelling of 31486051 in words is "thirty-one million, four hundred eighty-six thousand, fifty-one".