100103131949 has 2 divisors, whose sum is σ = 100103131950. Its totient is φ = 100103131948.

The previous prime is 100103131883. The next prime is 100103131951. The reversal of 100103131949 is 949131301001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100102632100 + 499849 = 316390^2 + 707^2 .

It is a cyclic number.

It is not a de Polignac number, because 100103131949 - 2¹² = 100103127853 is a prime.

It is a Sophie Germain prime.

Together with 100103131951, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100103031949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50051565974 + 50051565975.

It is an arithmetic number, because the mean of its divisors is an integer number (50051565975).

Almost surely, 2^100103131949 is an apocalyptic number.

It is an amenable number.

100103131949 is a deficient number, since it is larger than the sum of its proper divisors (1).

100103131949 is an equidigital number, since it uses as much as digits as its factorization.

100103131949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 100103131949 in words is "one hundred billion, one hundred three million, one hundred thirty-one thousand, nine hundred forty-nine".