31213486077 has 8 divisors (see below), whose sum is σ = 41751802560. Its totient is φ = 20742080160.

The previous prime is 31213486027. The next prime is 31213486079. The reversal of 31213486077 is 77068431213.

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

It is not a de Polignac number, because 31213486077 - 2¹⁶ = 31213420541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213486079) 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, 16726552 + ... + 16728417.

It is an arithmetic number, because the mean of its divisors is an integer number (5218975320).

Almost surely, 2^31213486077 is an apocalyptic number.

It is an amenable number.

31213486077 is a deficient number, since it is larger than the sum of its proper divisors (10538316483).

31213486077 is a wasteful number, since it uses less digits than its factorization.

31213486077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33455283.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 31213486077 in words is "thirty-one billion, two hundred thirteen million, four hundred eighty-six thousand, seventy-seven".