31230345 has 16 divisors (see below), whose sum is σ = 50067072. Its totient is φ = 16623360.

The previous prime is 31230337. The next prime is 31230371. The reversal of 31230345 is 54303213.

It is not a de Polignac number, because 31230345 - 2³ = 31230337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7140 + ... + 10650.

It is an arithmetic number, because the mean of its divisors is an integer number (3129192).

Almost surely, 2^31230345 is an apocalyptic number.

It is an amenable number.

31230345 is a deficient number, since it is larger than the sum of its proper divisors (18836727).

31230345 is a wasteful number, since it uses less digits than its factorization.

31230345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4112.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 31230345 is about 5588.4116705912. The cubic root of 31230345 is about 314.9142119621.

Adding to 31230345 its reverse (54303213), we get a palindrome (85533558).

The spelling of 31230345 in words is "thirty-one million, two hundred thirty thousand, three hundred forty-five".