145453831 has 2 divisors, whose sum is σ = 145453832. Its totient is φ = 145453830.

The previous prime is 145453813. The next prime is 145453843. The reversal of 145453831 is 138354541.

145453831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (145453813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145453831 - 2²⁷ = 11236103 is a prime.

It is a super-2 number, since 2×145453831² = 42313633905153122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145454831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72726915 + 72726916.

It is an arithmetic number, because the mean of its divisors is an integer number (72726916).

Almost surely, 2^145453831 is an apocalyptic number.

145453831 is a deficient number, since it is larger than the sum of its proper divisors (1).

145453831 is an equidigital number, since it uses as much as digits as its factorization.

145453831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

The square root of 145453831 is about 12060.4241633535. The cubic root of 145453831 is about 525.9063178010.

The spelling of 145453831 in words is "one hundred forty-five million, four hundred fifty-three thousand, eight hundred thirty-one".