31140354 has 32 divisors (see below), whose sum is σ = 74926080. Its totient is φ = 8428752.

The previous prime is 31140349. The next prime is 31140391. The reversal of 31140354 is 45304113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31140354.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 18714 + ... + 20309.

It is an arithmetic number, because the mean of its divisors is an integer number (2341440).

Almost surely, 2^31140354 is an apocalyptic number.

31140354 is an abundant number, since it is smaller than the sum of its proper divisors (43785726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31140354 is a wasteful number, since it uses less digits than its factorization.

31140354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39054.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 31140354 is about 5580.3542898278. The cubic root of 31140354 is about 314.6114433058.

Adding to 31140354 its reverse (45304113), we get a palindrome (76444467).

The spelling of 31140354 in words is "thirty-one million, one hundred forty thousand, three hundred fifty-four".