103111550431 has 2 divisors, whose sum is σ = 103111550432. Its totient is φ = 103111550430.

The previous prime is 103111550413. The next prime is 103111550449. The reversal of 103111550431 is 134055111301.

Together with previous prime (103111550413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (103111550413) and next prime (103111550449).

It is a cyclic number.

It is not a de Polignac number, because 103111550431 - 2⁷ = 103111550303 is a prime.

It is a super-2 number, since 2×103111550431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103111550396 and 103111550405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103111550131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51555775215 + 51555775216.

It is an arithmetic number, because the mean of its divisors is an integer number (51555775216).

Almost surely, 2^103111550431 is an apocalyptic number.

103111550431 is a deficient number, since it is larger than the sum of its proper divisors (1).

103111550431 is an equidigital number, since it uses as much as digits as its factorization.

103111550431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 103111550431 its reverse (134055111301), we get a palindrome (237166661732).

The spelling of 103111550431 in words is "one hundred three billion, one hundred eleven million, five hundred fifty thousand, four hundred thirty-one".