131123415 has 16 divisors (see below), whose sum is σ = 209959776. Its totient is φ = 69878400.

The previous prime is 131123411. The next prime is 131123423. The reversal of 131123415 is 514321131.

It is not a de Polignac number, because 131123415 - 2² = 131123411 is a prime.

It is a super-2 number, since 2×131123415² = 34386699922524450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131123391 and 131123400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23605 + ... + 28625.

It is an arithmetic number, because the mean of its divisors is an integer number (13122486).

Almost surely, 2^131123415 is an apocalyptic number.

131123415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131123415 is a deficient number, since it is larger than the sum of its proper divisors (78836361).

131123415 is a wasteful number, since it uses less digits than its factorization.

131123415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770.

The product of its digits is 360, while the sum is 21.

The square root of 131123415 is about 11450.9132823544. The cubic root of 131123415 is about 508.0347474010.

Adding to 131123415 its reverse (514321131), we get a palindrome (645444546).

The spelling of 131123415 in words is "one hundred thirty-one million, one hundred twenty-three thousand, four hundred fifteen".