1316531123 has 2 divisors, whose sum is σ = 1316531124. Its totient is φ = 1316531122.

The previous prime is 1316531059. The next prime is 1316531131. The reversal of 1316531123 is 3211356131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1316531123 - 2⁶ = 1316531059 is a prime.

It is a super-2 number, since 2×1316531123² = 3466508395655282258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1316531092 and 1316531101.

It is not a weakly prime, because it can be changed into another prime (1316531423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658265561 + 658265562.

It is an arithmetic number, because the mean of its divisors is an integer number (658265562).

Almost surely, 2^1316531123 is an apocalyptic number.

1316531123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316531123 is an equidigital number, since it uses as much as digits as its factorization.

1316531123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 26.

The square root of 1316531123 is about 36284.0339956847. The cubic root of 1316531123 is about 1095.9995523978. Note that the first 3 decimals are identical.

Adding to 1316531123 its reverse (3211356131), we get a palindrome (4527887254).

The spelling of 1316531123 in words is "one billion, three hundred sixteen million, five hundred thirty-one thousand, one hundred twenty-three".