145374731 has 2 divisors, whose sum is σ = 145374732. Its totient is φ = 145374730.

The previous prime is 145374727. The next prime is 145374737. The reversal of 145374731 is 137473541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145374731 - 2² = 145374727 is a prime.

It is a super-2 number, since 2×145374731² = 42267624826644722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145374691 and 145374700.

It is not a weakly prime, because it can be changed into another prime (145374737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72687365 + 72687366.

It is an arithmetic number, because the mean of its divisors is an integer number (72687366).

Almost surely, 2^145374731 is an apocalyptic number.

145374731 is a deficient number, since it is larger than the sum of its proper divisors (1).

145374731 is an equidigital number, since it uses as much as digits as its factorization.

145374731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 35.

The square root of 145374731 is about 12057.1443965808. The cubic root of 145374731 is about 525.8109685701.

The spelling of 145374731 in words is "one hundred forty-five million, three hundred seventy-four thousand, seven hundred thirty-one".