242320431 has 24 divisors (see below), whose sum is σ = 344797840. Its totient is φ = 151345152.

The previous prime is 242320423. The next prime is 242320451. The reversal of 242320431 is 134023242.

242320431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 242320431 - 2³ = 242320423 is a prime.

It is a super-2 number, since 2×242320431² = 117438382560051522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242320398 and 242320407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242320411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239655 + ... + 240663.

Almost surely, 2^242320431 is an apocalyptic number.

242320431 is a deficient number, since it is larger than the sum of its proper divisors (102477409).

242320431 is a wasteful number, since it uses less digits than its factorization.

242320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 242320431 is about 15566.6448215407. The cubic root of 242320431 is about 623.4428916701.

Adding to 242320431 its reverse (134023242), we get a palindrome (376343673).

The spelling of 242320431 in words is "two hundred forty-two million, three hundred twenty thousand, four hundred thirty-one".