145465731 has 12 divisors (see below), whose sum is σ = 219253008. Its totient is φ = 92760624.

The previous prime is 145465709. The next prime is 145465741. The reversal of 145465731 is 137564541.

145465731 is a `hidden beast` number, since 1 + 45 + 46 + 573 + 1 = 666.

It is not a de Polignac number, because 145465731 - 2⁶ = 145465667 is a prime.

It is a super-2 number, since 2×145465731² = 42320557790728722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145465741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351160 + ... + 351573.

It is an arithmetic number, because the mean of its divisors is an integer number (18271084).

Almost surely, 2^145465731 is an apocalyptic number.

145465731 is a deficient number, since it is larger than the sum of its proper divisors (73787277).

145465731 is a wasteful number, since it uses less digits than its factorization.

145465731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702762 (or 702759 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 145465731 is about 12060.9175024125. The cubic root of 145465731 is about 525.9206593839.

The spelling of 145465731 in words is "one hundred forty-five million, four hundred sixty-five thousand, seven hundred thirty-one".