31140120477 has 8 divisors (see below), whose sum is σ = 41537549920. Its totient is φ = 20751385680.

The previous prime is 31140120461. The next prime is 31140120491. The reversal of 31140120477 is 77402104113.

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

It is not a de Polignac number, because 31140120477 - 2⁴ = 31140120461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31140120577) 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, 2165299 + ... + 2179632.

It is an arithmetic number, because the mean of its divisors is an integer number (5192193740).

Almost surely, 2^31140120477 is an apocalyptic number.

It is an amenable number.

31140120477 is a deficient number, since it is larger than the sum of its proper divisors (10397429443).

31140120477 is a wasteful number, since it uses less digits than its factorization.

31140120477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347323.

The product of its (nonzero) digits is 4704, while the sum is 30.

The spelling of 31140120477 in words is "thirty-one billion, one hundred forty million, one hundred twenty thousand, four hundred seventy-seven".