31202011023 has 4 divisors (see below), whose sum is σ = 41602681368. Its totient is φ = 20801340680.

The previous prime is 31202010949. The next prime is 31202011063. The reversal of 31202011023 is 32011020213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31202011023 - 2¹³ = 31202002831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31202010993 and 31202011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31202011063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5200335168 + ... + 5200335173.

It is an arithmetic number, because the mean of its divisors is an integer number (10400670342).

Almost surely, 2^31202011023 is an apocalyptic number.

31202011023 is a deficient number, since it is larger than the sum of its proper divisors (10400670345).

31202011023 is a wasteful number, since it uses less digits than its factorization.

31202011023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10400670344.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31202011023 its reverse (32011020213), we get a palindrome (63213031236).

The spelling of 31202011023 in words is "thirty-one billion, two hundred two million, eleven thousand, twenty-three".