145007931 has 8 divisors (see below), whose sum is σ = 193530384. Its totient is φ = 96578720.

The previous prime is 145007927. The next prime is 145007953. The reversal of 145007931 is 139700541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145007931 - 2² = 145007927 is a prime.

It is a super-2 number, since 2×145007931² = 42054600105801522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145007131) 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 in 7 ways as a sum of consecutive naturals, for example, 19596 + ... + 25961.

It is an arithmetic number, because the mean of its divisors is an integer number (24191298).

Almost surely, 2^145007931 is an apocalyptic number.

145007931 is a deficient number, since it is larger than the sum of its proper divisors (48522453).

145007931 is a wasteful number, since it uses less digits than its factorization.

145007931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46621.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 145007931 is about 12041.9238911397. The cubic root of 145007931 is about 525.3683655127.

The spelling of 145007931 in words is "one hundred forty-five million, seven thousand, nine hundred thirty-one".