108402031 has 2 divisors, whose sum is σ = 108402032. Its totient is φ = 108402030.

The previous prime is 108402023. The next prime is 108402037. The reversal of 108402031 is 130204801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108402031 - 2³ = 108402023 is a prime.

It is a super-2 number, since 2×108402031² = 23502000649849922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108402037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54201015 + 54201016.

It is an arithmetic number, because the mean of its divisors is an integer number (54201016).

Almost surely, 2^108402031 is an apocalyptic number.

108402031 is a deficient number, since it is larger than the sum of its proper divisors (1).

108402031 is an equidigital number, since it uses as much as digits as its factorization.

108402031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 108402031 is about 10411.6296034771. The cubic root of 108402031 is about 476.8104953899.

Adding to 108402031 its reverse (130204801), we get a palindrome (238606832).

The spelling of 108402031 in words is "one hundred eight million, four hundred two thousand, thirty-one".