38957131 has 2 divisors, whose sum is σ = 38957132. Its totient is φ = 38957130.

The previous prime is 38957119. The next prime is 38957143. The reversal of 38957131 is 13175983.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (38957119) and next prime (38957143).

It is an emirp because it is prime and its reverse (13175983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38957131 - 2⁵ = 38957099 is a prime.

It is a super-2 number, since 2×38957131² = 3035316111502322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38957161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19478565 + 19478566.

It is an arithmetic number, because the mean of its divisors is an integer number (19478566).

Almost surely, 2^38957131 is an apocalyptic number.

38957131 is a deficient number, since it is larger than the sum of its proper divisors (1).

38957131 is an equidigital number, since it uses as much as digits as its factorization.

38957131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 37.

The square root of 38957131 is about 6241.5647877756. The cubic root of 38957131 is about 338.9968441795.

It can be divided in two parts, 3895 and 7131, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 38957131 in words is "thirty-eight million, nine hundred fifty-seven thousand, one hundred thirty-one".