100402311973 has 2 divisors, whose sum is σ = 100402311974. Its totient is φ = 100402311972.

The previous prime is 100402311943. The next prime is 100402312007. The reversal of 100402311973 is 379113204001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50442015649 + 49960296324 = 224593^2 + 223518^2 .

It is a cyclic number.

It is not a de Polignac number, because 100402311973 - 2²⁹ = 99865441061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100402311943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50201155986 + 50201155987.

It is an arithmetic number, because the mean of its divisors is an integer number (50201155987).

Almost surely, 2^100402311973 is an apocalyptic number.

It is an amenable number.

100402311973 is a deficient number, since it is larger than the sum of its proper divisors (1).

100402311973 is an equidigital number, since it uses as much as digits as its factorization.

100402311973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

Adding to 100402311973 its reverse (379113204001), we get a palindrome (479515515974).

The spelling of 100402311973 in words is "one hundred billion, four hundred two million, three hundred eleven thousand, nine hundred seventy-three".