101320123031 has 2 divisors, whose sum is σ = 101320123032. Its totient is φ = 101320123030.

The previous prime is 101320123019. The next prime is 101320123087. The reversal of 101320123031 is 130321023101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101320123031 is a prime.

It is a super-2 number, since 2×101320123031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101320123231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50660061515 + 50660061516.

It is an arithmetic number, because the mean of its divisors is an integer number (50660061516).

Almost surely, 2^101320123031 is an apocalyptic number.

101320123031 is a deficient number, since it is larger than the sum of its proper divisors (1).

101320123031 is an equidigital number, since it uses as much as digits as its factorization.

101320123031 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 101320123031 its reverse (130321023101), we get a palindrome (231641146132).

The spelling of 101320123031 in words is "one hundred one billion, three hundred twenty million, one hundred twenty-three thousand, thirty-one".