145922931 has 96 divisors (see below), whose sum is σ = 282792960. Its totient is φ = 73483200.

The previous prime is 145922929. The next prime is 145922957. The reversal of 145922931 is 139229541.

145922931 is a `hidden beast` number, since 14 + 592 + 29 + 31 = 666.

It is not a de Polignac number, because 145922931 - 2¹ = 145922929 is a prime.

It is a super-2 number, since 2×145922931² = 42587003583261522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145922911) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 538326 + ... + 538596.

It is an arithmetic number, because the mean of its divisors is an integer number (2945760).

Almost surely, 2^145922931 is an apocalyptic number.

145922931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145922931 is a deficient number, since it is larger than the sum of its proper divisors (136870029).

145922931 is a wasteful number, since it uses less digits than its factorization.

145922931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 329 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 145922931 is about 12079.8564147096. The cubic root of 145922931 is about 526.4710741326.

The spelling of 145922931 in words is "one hundred forty-five million, nine hundred twenty-two thousand, nine hundred thirty-one".