31719134858 has 8 divisors (see below), whose sum is σ = 47782903428. Its totient is φ = 15791500384.

The previous prime is 31719134827. The next prime is 31719134893. The reversal of 31719134858 is 85843191713.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31204162609 + 514972249 = 176647^2 + 22693^2 .

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

It is a super-2 number, since 2×31719134858² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

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, 34032941 + ... + 34033872.

Almost surely, 2^31719134858 is an apocalyptic number.

31719134858 is a deficient number, since it is larger than the sum of its proper divisors (16063768570).

31719134858 is a wasteful number, since it uses less digits than its factorization.

31719134858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68067048.

The product of its digits is 725760, while the sum is 50.

The spelling of 31719134858 in words is "thirty-one billion, seven hundred nineteen million, one hundred thirty-four thousand, eight hundred fifty-eight".