242023431 has 16 divisors (see below), whose sum is σ = 347899104. Its totient is φ = 148775424.

The previous prime is 242023427. The next prime is 242023433. The reversal of 242023431 is 134320242.

It is not a de Polignac number, because 242023431 - 2² = 242023427 is a prime.

It is a super-2 number, since 2×242023431² = 117150682306023522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242023398 and 242023407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242023433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39955 + ... + 45611.

It is an arithmetic number, because the mean of its divisors is an integer number (21743694).

Almost surely, 2^242023431 is an apocalyptic number.

242023431 is a deficient number, since it is larger than the sum of its proper divisors (105875673).

242023431 is a wasteful number, since it uses less digits than its factorization.

242023431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770.

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

The square root of 242023431 is about 15557.1022687389. The cubic root of 242023431 is about 623.1880799762.

Adding to 242023431 its reverse (134320242), we get a palindrome (376343673).

The spelling of 242023431 in words is "two hundred forty-two million, twenty-three thousand, four hundred thirty-one".