31857380223 has 8 divisors (see below), whose sum is σ = 43196448000. Its totient is φ = 20878282968.

The previous prime is 31857380221. The next prime is 31857380251. The reversal of 31857380223 is 32208375813.

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

It is not a de Polignac number, because 31857380223 - 2¹ = 31857380221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31857380221) 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, 89992423 + ... + 89992776.

It is an arithmetic number, because the mean of its divisors is an integer number (5399556000).

Almost surely, 2^31857380223 is an apocalyptic number.

31857380223 is a deficient number, since it is larger than the sum of its proper divisors (11339067777).

31857380223 is a wasteful number, since it uses less digits than its factorization.

31857380223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179985261.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 31857380223 in words is "thirty-one billion, eight hundred fifty-seven million, three hundred eighty thousand, two hundred twenty-three".