145265831 has 2 divisors, whose sum is σ = 145265832. Its totient is φ = 145265830.

The previous prime is 145265819. The next prime is 145265893. The reversal of 145265831 is 138562541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145265831 is a prime.

It is a super-2 number, since 2×145265831² = 42204323312241122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145265791 and 145265800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145265231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72632915 + 72632916.

It is an arithmetic number, because the mean of its divisors is an integer number (72632916).

Almost surely, 2^145265831 is an apocalyptic number.

145265831 is a deficient number, since it is larger than the sum of its proper divisors (1).

145265831 is an equidigital number, since it uses as much as digits as its factorization.

145265831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 145265831 is about 12052.6275558486. The cubic root of 145265831 is about 525.6796410277.

The spelling of 145265831 in words is "one hundred forty-five million, two hundred sixty-five thousand, eight hundred thirty-one".