31120230023 has 4 divisors (see below), whose sum is σ = 31259782848. Its totient is φ = 30980677200.

The previous prime is 31120230019. The next prime is 31120230143. The reversal of 31120230023 is 32003202113.

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 31120230023 - 2² = 31120230019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31120229983 and 31120230010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120230013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69776078 + ... + 69776523.

It is an arithmetic number, because the mean of its divisors is an integer number (7814945712).

Almost surely, 2^31120230023 is an apocalyptic number.

31120230023 is a deficient number, since it is larger than the sum of its proper divisors (139552825).

31120230023 is a wasteful number, since it uses less digits than its factorization.

31120230023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139552824.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31120230023 its reverse (32003202113), we get a palindrome (63123432136).

The spelling of 31120230023 in words is "thirty-one billion, one hundred twenty million, two hundred thirty thousand, twenty-three".