31357121834 has 8 divisors (see below), whose sum is σ = 47188894368. Its totient is φ = 15627490380.

The previous prime is 31357121801. The next prime is 31357121863. The reversal of 31357121834 is 43812175313.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25534502 + ... + 25535729.

It is an arithmetic number, because the mean of its divisors is an integer number (5898611796).

Almost surely, 2^31357121834 is an apocalyptic number.

31357121834 is a deficient number, since it is larger than the sum of its proper divisors (15831772534).

31357121834 is a wasteful number, since it uses less digits than its factorization.

31357121834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51070540.

The product of its digits is 60480, while the sum is 38.

The spelling of 31357121834 in words is "thirty-one billion, three hundred fifty-seven million, one hundred twenty-one thousand, eight hundred thirty-four".