102541431 has 4 divisors (see below), whose sum is σ = 136721912. Its totient is φ = 68360952.

The previous prime is 102541409. The next prime is 102541441. The reversal of 102541431 is 134145201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134145201 = 3 ⋅44715067.

It is not a de Polignac number, because 102541431 - 2⁶ = 102541367 is a prime.

It is a super-2 number, since 2×102541431² = 21029490143055522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102541398 and 102541407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102541441) 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, 17090236 + ... + 17090241.

It is an arithmetic number, because the mean of its divisors is an integer number (34180478).

Almost surely, 2^102541431 is an apocalyptic number.

102541431 is a deficient number, since it is larger than the sum of its proper divisors (34180481).

102541431 is an equidigital number, since it uses as much as digits as its factorization.

102541431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34180480.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 102541431 is about 10126.2742901820. The cubic root of 102541431 is about 468.0581279614.

Adding to 102541431 its reverse (134145201), we get a palindrome (236686632).

The spelling of 102541431 in words is "one hundred two million, five hundred forty-one thousand, four hundred thirty-one".