31200320090 has 32 divisors (see below), whose sum is σ = 59126656320. Its totient is φ = 11821227264.

The previous prime is 31200320089. The next prime is 31200320113. The reversal of 31200320090 is 9002300213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1512989 + ... + 1533471.

It is an arithmetic number, because the mean of its divisors is an integer number (1847708010).

Almost surely, 2^31200320090 is an apocalyptic number.

31200320090 is a deficient number, since it is larger than the sum of its proper divisors (27926336230).

31200320090 is a wasteful number, since it uses less digits than its factorization.

31200320090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28526.

The product of its (nonzero) digits is 324, while the sum is 20.

The spelling of 31200320090 in words is "thirty-one billion, two hundred million, three hundred twenty thousand, ninety".