102401511343531 has 4 divisors (see below), whose sum is σ = 103307719408632. Its totient is φ = 101495303278432.

The previous prime is 102401511343487. The next prime is 102401511343541. The reversal of 102401511343531 is 135343115104201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102401511343531 - 2²⁵ = 102401477789099 is a prime.

It is a super-2 number, since 2×102401511343531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102401511343541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453104032381 + ... + 453104032606.

It is an arithmetic number, because the mean of its divisors is an integer number (25826929852158).

Almost surely, 2^{102401511343531} is an apocalyptic number.

102401511343531 is a deficient number, since it is larger than the sum of its proper divisors (906208065101).

102401511343531 is an equidigital number, since it uses as much as digits as its factorization.

102401511343531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906208065100.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 102401511343531 its reverse (135343115104201), we get a palindrome (237744626447732).

The spelling of 102401511343531 in words is "one hundred two trillion, four hundred one billion, five hundred eleven million, three hundred forty-three thousand, five hundred thirty-one".