137713531 has 2 divisors, whose sum is σ = 137713532. Its totient is φ = 137713530.

The previous prime is 137713529. The next prime is 137713559. The reversal of 137713531 is 135317731.

It is a weak prime.

It is an emirp because it is prime and its reverse (135317731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137713531 - 2¹ = 137713529 is a prime.

It is a super-2 number, since 2×137713531² = 37930033240975922, which contains 22 as substring.

Together with 137713529, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 137713493 and 137713502.

It is not a weakly prime, because it can be changed into another prime (137713561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68856765 + 68856766.

It is an arithmetic number, because the mean of its divisors is an integer number (68856766).

Almost surely, 2^137713531 is an apocalyptic number.

137713531 is a deficient number, since it is larger than the sum of its proper divisors (1).

137713531 is an equidigital number, since it uses as much as digits as its factorization.

137713531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6615, while the sum is 31.

The square root of 137713531 is about 11735.1408598278. The cubic root of 137713531 is about 516.4070999113.

The spelling of 137713531 in words is "one hundred thirty-seven million, seven hundred thirteen thousand, five hundred thirty-one".