31142255617 has 8 divisors (see below), whose sum is σ = 34382688480. Its totient is φ = 27970042560.

The previous prime is 31142255611. The next prime is 31142255633. The reversal of 31142255617 is 71655224113.

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

It is a cyclic number.

It is not a de Polignac number, because 31142255617 - 2³ = 31142255609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31142255611) 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, 17053992 + ... + 17055817.

It is an arithmetic number, because the mean of its divisors is an integer number (4297836060).

Almost surely, 2^31142255617 is an apocalyptic number.

It is an amenable number.

31142255617 is a deficient number, since it is larger than the sum of its proper divisors (3240432863).

31142255617 is a wasteful number, since it uses less digits than its factorization.

31142255617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34109903.

The product of its digits is 50400, while the sum is 37.

The spelling of 31142255617 in words is "thirty-one billion, one hundred forty-two million, two hundred fifty-five thousand, six hundred seventeen".