31828314861 has 24 divisors (see below), whose sum is σ = 52547718080. Its totient is φ = 18185622336.

The previous prime is 31828314857. The next prime is 31828314863. The reversal of 31828314861 is 16841382813.

It is not a de Polignac number, because 31828314861 - 2² = 31828314857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31828314863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 708570 + ... + 752148.

Almost surely, 2^31828314861 is an apocalyptic number.

It is an amenable number.

31828314861 is a deficient number, since it is larger than the sum of its proper divisors (20719403219).

31828314861 is a wasteful number, since it uses less digits than its factorization.

31828314861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55185 (or 55182 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The spelling of 31828314861 in words is "thirty-one billion, eight hundred twenty-eight million, three hundred fourteen thousand, eight hundred sixty-one".