152402431 has 4 divisors (see below), whose sum is σ = 153009864. Its totient is φ = 151795000.

The previous prime is 152402407. The next prime is 152402473. The reversal of 152402431 is 134204251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 152402431 - 2¹¹ = 152400383 is a prime.

It is a super-2 number, since 2×152402431² = 46453001949419522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152400431) 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, 303340 + ... + 303841.

It is an arithmetic number, because the mean of its divisors is an integer number (38252466).

Almost surely, 2^152402431 is an apocalyptic number.

152402431 is a deficient number, since it is larger than the sum of its proper divisors (607433).

152402431 is an equidigital number, since it uses as much as digits as its factorization.

152402431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607432.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 152402431 is about 12345.1379498165. The cubic root of 152402431 is about 534.1509004633.

Adding to 152402431 its reverse (134204251), we get a palindrome (286606682).

It can be divided in two parts, 15240 and 2431, that added together give a palindrome (17671).

The spelling of 152402431 in words is "one hundred fifty-two million, four hundred two thousand, four hundred thirty-one".