145131432 has 16 divisors (see below), whose sum is σ = 362828640. Its totient is φ = 48377136.

The previous prime is 145131419. The next prime is 145131433. The reversal of 145131432 is 234131541.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 6047143 = 145131432 / (1 + 4 + 5 + 1 + 3 + 1 + 4 + 3 + 2).

It is not an unprimeable number, because it can be changed into a prime (145131433) 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, 3023548 + ... + 3023595.

It is an arithmetic number, because the mean of its divisors is an integer number (22676790).

Almost surely, 2^145131432 is an apocalyptic number.

145131432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145131432 is an abundant number, since it is smaller than the sum of its proper divisors (217697208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145131432 is a wasteful number, since it uses less digits than its factorization.

145131432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6047152 (or 6047148 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 145131432 is about 12047.0507594183. The cubic root of 145131432 is about 525.5174725458.

Adding to 145131432 its reverse (234131541), we get a palindrome (379262973).

The spelling of 145131432 in words is "one hundred forty-five million, one hundred thirty-one thousand, four hundred thirty-two".