154093931 has 4 divisors (see below), whose sum is σ = 154236264. Its totient is φ = 153951600.

The previous prime is 154093921. The next prime is 154093939. The reversal of 154093931 is 139390451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139390451 = 139 ⋅1002809.

It is a cyclic number.

It is not a de Polignac number, because 154093931 - 2²² = 149899627 is a prime.

It is a super-2 number, since 2×154093931² = 47489879142065522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154093891 and 154093900.

It is not an unprimeable number, because it can be changed into a prime (154093939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69530 + ... + 71711.

It is an arithmetic number, because the mean of its divisors is an integer number (38559066).

Almost surely, 2^154093931 is an apocalyptic number.

154093931 is a deficient number, since it is larger than the sum of its proper divisors (142333).

154093931 is a wasteful number, since it uses less digits than its factorization.

154093931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142332.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 154093931 is about 12413.4576569141. The cubic root of 154093931 is about 536.1197973765.

The spelling of 154093931 in words is "one hundred fifty-four million, ninety-three thousand, nine hundred thirty-one".