8131951123 has 2 divisors, whose sum is σ = 8131951124. Its totient is φ = 8131951122.

The previous prime is 8131951099. The next prime is 8131951127. The reversal of 8131951123 is 3211591318.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8131951123 - 2⁹ = 8131950611 is a prime.

It is a super-2 number, since 2×8131951123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8131951127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4065975561 + 4065975562.

It is an arithmetic number, because the mean of its divisors is an integer number (4065975562).

Almost surely, 2^8131951123 is an apocalyptic number.

8131951123 is a deficient number, since it is larger than the sum of its proper divisors (1).

8131951123 is an equidigital number, since it uses as much as digits as its factorization.

8131951123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 8131951123 is about 90177.3315362569. The cubic root of 8131951123 is about 2010.9360196612.

The spelling of 8131951123 in words is "eight billion, one hundred thirty-one million, nine hundred fifty-one thousand, one hundred twenty-three".