31130133023 has 4 divisors (see below), whose sum is σ = 33960145128. Its totient is φ = 28300120920.

The previous prime is 31130133019. The next prime is 31130133029. The reversal of 31130133023 is 32033103113.

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 31130133023 - 2² = 31130133019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31130132986 and 31130133004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130133029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415006036 + ... + 1415006057.

It is an arithmetic number, because the mean of its divisors is an integer number (8490036282).

Almost surely, 2^31130133023 is an apocalyptic number.

31130133023 is a deficient number, since it is larger than the sum of its proper divisors (2830012105).

31130133023 is a wasteful number, since it uses less digits than its factorization.

31130133023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830012104.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31130133023 its reverse (32033103113), we get a palindrome (63163236136).

The spelling of 31130133023 in words is "thirty-one billion, one hundred thirty million, one hundred thirty-three thousand, twenty-three".