242636631 has 32 divisors (see below), whose sum is σ = 362419200. Its totient is φ = 143493120.

The previous prime is 242636629. The next prime is 242636633. The reversal of 242636631 is 136636242.

It is an interprime number because it is at equal distance from previous prime (242636629) and next prime (242636633).

It is not a de Polignac number, because 242636631 - 2¹ = 242636629 is a prime.

It is a super-2 number, since 2×242636631² = 117745069406060322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242636592 and 242636601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242636633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233010 + ... + 234048.

It is an arithmetic number, because the mean of its divisors is an integer number (11325600).

Almost surely, 2^242636631 is an apocalyptic number.

242636631 is a deficient number, since it is larger than the sum of its proper divisors (119782569).

242636631 is a wasteful number, since it uses less digits than its factorization.

242636631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319.

The product of its digits is 31104, while the sum is 33.

The square root of 242636631 is about 15576.7978416618. The cubic root of 242636631 is about 623.7139473113.

The spelling of 242636631 in words is "two hundred forty-two million, six hundred thirty-six thousand, six hundred thirty-one".