145414731 has 32 divisors (see below), whose sum is σ = 242343936. Its totient is φ = 75348000.

The previous prime is 145414727. The next prime is 145414781. The reversal of 145414731 is 137414541.

145414731 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 145414731 - 2² = 145414727 is a prime.

It is a super-2 number, since 2×145414731² = 42290887983604722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145414721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159166 + ... + 160076.

It is an arithmetic number, because the mean of its divisors is an integer number (7573248).

Almost surely, 2^145414731 is an apocalyptic number.

145414731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145414731 is a deficient number, since it is larger than the sum of its proper divisors (96929205).

145414731 is a wasteful number, since it uses less digits than its factorization.

145414731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623.

The product of its digits is 6720, while the sum is 30.

The square root of 145414731 is about 12058.8030500543. The cubic root of 145414731 is about 525.8591899491.

The spelling of 145414731 in words is "one hundred forty-five million, four hundred fourteen thousand, seven hundred thirty-one".