102040042231331 has 4 divisors (see below), whose sum is σ = 103769534472600. Its totient is φ = 100310549990064.

The previous prime is 102040042231327. The next prime is 102040042231349. The reversal of 102040042231331 is 133132240040201.

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 102040042231331 - 2² = 102040042231327 is a prime.

It is a super-2 number, since 2×102040042231331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102040042231331.

It is not an unprimeable number, because it can be changed into a prime (102040042231301) 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, 864746120546 + ... + 864746120663.

It is an arithmetic number, because the mean of its divisors is an integer number (25942383618150).

Almost surely, 2^{102040042231331} is an apocalyptic number.

102040042231331 is a deficient number, since it is larger than the sum of its proper divisors (1729492241269).

102040042231331 is an equidigital number, since it uses as much as digits as its factorization.

102040042231331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729492241268.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 102040042231331 its reverse (133132240040201), we get a palindrome (235172282271532).

The spelling of 102040042231331 in words is "one hundred two trillion, forty billion, forty-two million, two hundred thirty-one thousand, three hundred thirty-one".