126036631 has 4 divisors (see below), whose sum is σ = 144041872. Its totient is φ = 108031392.

The previous prime is 126036629. The next prime is 126036637. The reversal of 126036631 is 136630621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136630621 = 67 ⋅2039263.

It is not a de Polignac number, because 126036631 - 2¹ = 126036629 is a prime.

It is a super-2 number, since 2×126036631² = 31770464707660322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126036631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126036637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9002610 + ... + 9002623.

It is an arithmetic number, because the mean of its divisors is an integer number (36010468).

Almost surely, 2^126036631 is an apocalyptic number.

126036631 is a deficient number, since it is larger than the sum of its proper divisors (18005241).

126036631 is an equidigital number, since it uses as much as digits as its factorization.

126036631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18005240.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 126036631 is about 11226.6037161735. The cubic root of 126036631 is about 501.3783713598.

The spelling of 126036631 in words is "one hundred twenty-six million, thirty-six thousand, six hundred thirty-one".