146372431 has 6 divisors (see below), whose sum is σ = 155489360. Its totient is φ = 137762016.

The previous prime is 146372423. The next prime is 146372441. The reversal of 146372431 is 134273641.

It is not a de Polignac number, because 146372431 - 2³ = 146372423 is a prime.

It is a super-2 number, since 2×146372431² = 42849777113699522, 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 = 146372393 and 146372402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146372441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252951 + ... + 253528.

Almost surely, 2^146372431 is an apocalyptic number.

146372431 is a deficient number, since it is larger than the sum of its proper divisors (9116929).

146372431 is an equidigital number, since it uses as much as digits as its factorization.

146372431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506513 (or 506496 counting only the distinct ones).

The product of its digits is 12096, while the sum is 31.

The square root of 146372431 is about 12098.4474623813. The cubic root of 146372431 is about 527.0110993153.

The spelling of 146372431 in words is "one hundred forty-six million, three hundred seventy-two thousand, four hundred thirty-one".