131951123 has 2 divisors, whose sum is σ = 131951124. Its totient is φ = 131951122.

The previous prime is 131951119. The next prime is 131951173. The reversal of 131951123 is 321159131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131951123 - 2² = 131951119 is a prime.

It is a super-2 number, since 2×131951123² = 34822197721922258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131951092 and 131951101.

It is not a weakly prime, because it can be changed into another prime (131951173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65975561 + 65975562.

It is an arithmetic number, because the mean of its divisors is an integer number (65975562).

Almost surely, 2^131951123 is an apocalyptic number.

131951123 is a deficient number, since it is larger than the sum of its proper divisors (1).

131951123 is an equidigital number, since it uses as much as digits as its factorization.

131951123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810, while the sum is 26.

The square root of 131951123 is about 11486.9979977364. The cubic root of 131951123 is about 509.1014846993.

The spelling of 131951123 in words is "one hundred thirty-one million, nine hundred fifty-one thousand, one hundred twenty-three".