100231513 has 2 divisors, whose sum is σ = 100231514. Its totient is φ = 100231512.

The previous prime is 100231499. The next prime is 100231519. The reversal of 100231513 is 315132001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99361024 + 870489 = 9968^2 + 933^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100231513 is a prime.

It is not a weakly prime, because it can be changed into another prime (100231519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50115756 + 50115757.

It is an arithmetic number, because the mean of its divisors is an integer number (50115757).

Almost surely, 2^100231513 is an apocalyptic number.

It is an amenable number.

100231513 is a deficient number, since it is larger than the sum of its proper divisors (1).

100231513 is an equidigital number, since it uses as much as digits as its factorization.

100231513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 100231513 is about 10011.5689579606. The cubic root of 100231513 is about 464.5168033447.

Adding to 100231513 its reverse (315132001), we get a palindrome (415363514).

The spelling of 100231513 in words is "one hundred million, two hundred thirty-one thousand, five hundred thirteen".