31300021023 has 8 divisors (see below), whose sum is σ = 41880830208. Its totient is φ = 20792946264.

The previous prime is 31300020991. The next prime is 31300021043. The reversal of 31300021023 is 32012000313.

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

It is not a de Polignac number, because 31300021023 - 2⁵ = 31300020991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31300020993 and 31300021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31300021043) 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, 18432615 + ... + 18434312.

It is an arithmetic number, because the mean of its divisors is an integer number (5235103776).

Almost surely, 2^31300021023 is an apocalyptic number.

31300021023 is a deficient number, since it is larger than the sum of its proper divisors (10580809185).

31300021023 is a wasteful number, since it uses less digits than its factorization.

31300021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36867213.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31300021023 its reverse (32012000313), we get a palindrome (63312021336).

The spelling of 31300021023 in words is "thirty-one billion, three hundred million, twenty-one thousand, twenty-three".