30131121023 has 2 divisors, whose sum is σ = 30131121024. Its totient is φ = 30131121022.

The previous prime is 30131121019. The next prime is 30131121049. The reversal of 30131121023 is 32012113103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30131121023 - 2² = 30131121019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30131120992 and 30131121010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30131141023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15065560511 + 15065560512.

It is an arithmetic number, because the mean of its divisors is an integer number (15065560512).

Almost surely, 2^30131121023 is an apocalyptic number.

30131121023 is a deficient number, since it is larger than the sum of its proper divisors (1).

30131121023 is an equidigital number, since it uses as much as digits as its factorization.

30131121023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 30131121023 its reverse (32012113103), we get a palindrome (62143234126).

The spelling of 30131121023 in words is "thirty billion, one hundred thirty-one million, one hundred twenty-one thousand, twenty-three".