145788431 has 2 divisors, whose sum is σ = 145788432. Its totient is φ = 145788430.

The previous prime is 145788427. The next prime is 145788437. The reversal of 145788431 is 134887541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145788431 - 2² = 145788427 is a prime.

It is a super-2 number, since 2×145788431² = 42508533226883522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145788437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72894215 + 72894216.

It is an arithmetic number, because the mean of its divisors is an integer number (72894216).

Almost surely, 2^145788431 is an apocalyptic number.

145788431 is a deficient number, since it is larger than the sum of its proper divisors (1).

145788431 is an equidigital number, since it uses as much as digits as its factorization.

145788431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 41.

The square root of 145788431 is about 12074.2880121355. The cubic root of 145788431 is about 526.3092715384.

The spelling of 145788431 in words is "one hundred forty-five million, seven hundred eighty-eight thousand, four hundred thirty-one".