31012002130233 has 4 divisors (see below), whose sum is σ = 41349336173648. Its totient is φ = 20674668086820.

The previous prime is 31012002130217. The next prime is 31012002130331. The reversal of 31012002130233 is 33203120021013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31012002130233 - 2⁴ = 31012002130217 is a prime.

It is a super-2 number, since 2×31012002130233² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31012009130233) 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, 5168667021703 + ... + 5168667021708.

It is an arithmetic number, because the mean of its divisors is an integer number (10337334043412).

Almost surely, 2^{31012002130233} is an apocalyptic number.

It is an amenable number.

31012002130233 is a deficient number, since it is larger than the sum of its proper divisors (10337334043415).

31012002130233 is a wasteful number, since it uses less digits than its factorization.

31012002130233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10337334043414.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31012002130233 its reverse (33203120021013), we get a palindrome (64215122151246).

The spelling of 31012002130233 in words is "thirty-one trillion, twelve billion, two million, one hundred thirty thousand, two hundred thirty-three".