31723245057 has 8 divisors (see below), whose sum is σ = 48340182976. Its totient is φ = 18127568592.

The previous prime is 31723245049. The next prime is 31723245083. The reversal of 31723245057 is 75054232713.

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

It is not a de Polignac number, because 31723245057 - 2³ = 31723245049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31723240057) 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, 755315338 + ... + 755315379.

It is an arithmetic number, because the mean of its divisors is an integer number (6042522872).

Almost surely, 2^31723245057 is an apocalyptic number.

It is an amenable number.

31723245057 is a deficient number, since it is larger than the sum of its proper divisors (16616937919).

31723245057 is a wasteful number, since it uses less digits than its factorization.

31723245057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510630727.

The product of its (nonzero) digits is 176400, while the sum is 39.

The spelling of 31723245057 in words is "thirty-one billion, seven hundred twenty-three million, two hundred forty-five thousand, fifty-seven".