31140051 has 8 divisors (see below), whose sum is σ = 42642384. Its totient is φ = 20198880.

The previous prime is 31140049. The next prime is 31140071. The reversal of 31140051 is 15004113.

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

It is not a de Polignac number, because 31140051 - 2¹ = 31140049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31140051.

It is not an unprimeable number, because it can be changed into a prime (31140071) 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, 140160 + ... + 140381.

It is an arithmetic number, because the mean of its divisors is an integer number (5330298).

Almost surely, 2^31140051 is an apocalyptic number.

31140051 is a deficient number, since it is larger than the sum of its proper divisors (11502333).

31140051 is a wasteful number, since it uses less digits than its factorization.

31140051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280581.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 31140051 is about 5580.3271409479. The cubic root of 31140051 is about 314.6104228980.

Adding to 31140051 its reverse (15004113), we get a palindrome (46144164).

The spelling of 31140051 in words is "thirty-one million, one hundred forty thousand, fifty-one".