131913407 has 2 divisors, whose sum is σ = 131913408. Its totient is φ = 131913406.

The previous prime is 131913403. The next prime is 131913427. The reversal of 131913407 is 704319131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131913407 - 2² = 131913403 is a prime.

It is a super-3 number, since 3×131913407³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 131913407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131913403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65956703 + 65956704.

It is an arithmetic number, because the mean of its divisors is an integer number (65956704).

Almost surely, 2^131913407 is an apocalyptic number.

131913407 is a deficient number, since it is larger than the sum of its proper divisors (1).

131913407 is an equidigital number, since it uses as much as digits as its factorization.

131913407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 131913407 is about 11485.3561982204. The cubic root of 131913407 is about 509.0529740566.

The spelling of 131913407 in words is "one hundred thirty-one million, nine hundred thirteen thousand, four hundred seven".