102040302031 has 2 divisors, whose sum is σ = 102040302032. Its totient is φ = 102040302030.

The previous prime is 102040302017. The next prime is 102040302097. The reversal of 102040302031 is 130203040201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102040302031 - 2¹⁹ = 102039777743 is a prime.

It is a super-2 number, since 2×102040302031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102040301996 and 102040302014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102040302431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51020151015 + 51020151016.

It is an arithmetic number, because the mean of its divisors is an integer number (51020151016).

Almost surely, 2^102040302031 is an apocalyptic number.

102040302031 is a deficient number, since it is larger than the sum of its proper divisors (1).

102040302031 is an equidigital number, since it uses as much as digits as its factorization.

102040302031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 102040302031 its reverse (130203040201), we get a palindrome (232243342232).

The spelling of 102040302031 in words is "one hundred two billion, forty million, three hundred two thousand, thirty-one".