31052742667 has 4 divisors (see below), whose sum is σ = 31208786800. Its totient is φ = 30896698536.

The previous prime is 31052742659. The next prime is 31052742673. The reversal of 31052742667 is 76624725013.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31052742667 - 2³ = 31052742659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31052746667) 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, 78021768 + ... + 78022165.

It is an arithmetic number, because the mean of its divisors is an integer number (7802196700).

Almost surely, 2^31052742667 is an apocalyptic number.

31052742667 is a deficient number, since it is larger than the sum of its proper divisors (156044133).

31052742667 is a wasteful number, since it uses less digits than its factorization.

31052742667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156044132.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 31052742667 in words is "thirty-one billion, fifty-two million, seven hundred forty-two thousand, six hundred sixty-seven".