102444731 has 2 divisors, whose sum is σ = 102444732. Its totient is φ = 102444730.

The previous prime is 102444701. The next prime is 102444757. The reversal of 102444731 is 137444201.

It is an a-pointer prime, because the next prime (102444757) can be obtained adding 102444731 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102444731 is a prime.

It is a super-2 number, since 2×102444731² = 20989845819324722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102444731.

It is not a weakly prime, because it can be changed into another prime (102444701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51222365 + 51222366.

It is an arithmetic number, because the mean of its divisors is an integer number (51222366).

Almost surely, 2^102444731 is an apocalyptic number.

102444731 is a deficient number, since it is larger than the sum of its proper divisors (1).

102444731 is an equidigital number, since it uses as much as digits as its factorization.

102444731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 102444731 is about 10121.4984562564. The cubic root of 102444731 is about 467.9109501960.

Adding to 102444731 its reverse (137444201), we get a palindrome (239888932).

The spelling of 102444731 in words is "one hundred two million, four hundred forty-four thousand, seven hundred thirty-one".