31010309138 has 8 divisors (see below), whose sum is σ = 46548156288. Its totient is φ = 15494257044.

The previous prime is 31010309137. The next prime is 31010309149. The reversal of 31010309138 is 83190301013.

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

It is a self number, because there is not a number n which added to its sum of digits gives 31010309138.

It is not an unprimeable number, because it can be changed into a prime (31010309137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5445206 + ... + 5450897.

It is an arithmetic number, because the mean of its divisors is an integer number (5818519536).

Almost surely, 2^31010309138 is an apocalyptic number.

31010309138 is a deficient number, since it is larger than the sum of its proper divisors (15537847150).

31010309138 is a wasteful number, since it uses less digits than its factorization.

31010309138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10897528.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 31010309138 in words is "thirty-one billion, ten million, three hundred nine thousand, one hundred thirty-eight".