2103550115431 has 2 divisors, whose sum is σ = 2103550115432. Its totient is φ = 2103550115430.

The previous prime is 2103550115423. The next prime is 2103550115437. The reversal of 2103550115431 is 1345110553012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2103550115431 - 2³ = 2103550115423 is a prime.

It is a super-2 number, since 2×2103550115431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2103550115393 and 2103550115402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2103550115437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051775057715 + 1051775057716.

It is an arithmetic number, because the mean of its divisors is an integer number (1051775057716).

Almost surely, 2^{2103550115431} is an apocalyptic number.

2103550115431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2103550115431 is an equidigital number, since it uses as much as digits as its factorization.

2103550115431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 2103550115431 its reverse (1345110553012), we get a palindrome (3448660668443).

The spelling of 2103550115431 in words is "two trillion, one hundred three billion, five hundred fifty million, one hundred fifteen thousand, four hundred thirty-one".