31011030023 has 4 divisors (see below), whose sum is σ = 31012340208. Its totient is φ = 31009719840.

The previous prime is 31011030013. The next prime is 31011030047. The reversal of 31011030023 is 32003011013.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31011030023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011030013) 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, 618923 + ... + 667148.

It is an arithmetic number, because the mean of its divisors is an integer number (7753085052).

Almost surely, 2^31011030023 is an apocalyptic number.

31011030023 is a deficient number, since it is larger than the sum of its proper divisors (1310185).

31011030023 is a wasteful number, since it uses less digits than its factorization.

31011030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310184.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31011030023 its reverse (32003011013), we get a palindrome (63014041036).

The spelling of 31011030023 in words is "thirty-one billion, eleven million, thirty thousand, twenty-three".