145057031 has 4 divisors (see below), whose sum is σ = 165779472. Its totient is φ = 124334592.

The previous prime is 145057019. The next prime is 145057049. The reversal of 145057031 is 130750541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130750541 = 863 ⋅151507.

It is a cyclic number.

It is not a de Polignac number, because 145057031 - 2¹⁰ = 145056007 is a prime.

It is a super-2 number, since 2×145057031² = 42083084485069922, 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 (145053031) 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, 10361210 + ... + 10361223.

It is an arithmetic number, because the mean of its divisors is an integer number (41444868).

Almost surely, 2^145057031 is an apocalyptic number.

145057031 is a deficient number, since it is larger than the sum of its proper divisors (20722441).

145057031 is an equidigital number, since it uses as much as digits as its factorization.

145057031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20722440.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 145057031 is about 12043.9624293668. The cubic root of 145057031 is about 525.4276557773.

The spelling of 145057031 in words is "one hundred forty-five million, fifty-seven thousand, thirty-one".