145336431 has 16 divisors (see below), whose sum is σ = 203132160. Its totient is φ = 92326080.

The previous prime is 145336427. The next prime is 145336501. The reversal of 145336431 is 134633541.

145336431 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 145336431 - 2² = 145336427 is a prime.

It is a super-2 number, since 2×145336431² = 42245356351635522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145336421) 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, 8451 + ... + 19028.

It is an arithmetic number, because the mean of its divisors is an integer number (12695760).

Almost surely, 2^145336431 is an apocalyptic number.

145336431 is a deficient number, since it is larger than the sum of its proper divisors (57795729).

145336431 is a wasteful number, since it uses less digits than its factorization.

145336431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27566.

The product of its digits is 12960, while the sum is 30.

The square root of 145336431 is about 12055.5560220174. The cubic root of 145336431 is about 525.7647883094.

Adding to 145336431 its reverse (134633541), we get a palindrome (279969972).

The spelling of 145336431 in words is "one hundred forty-five million, three hundred thirty-six thousand, four hundred thirty-one".