145307383 has 24 divisors (see below), whose sum is σ = 168551600. Its totient is φ = 124916688.

The previous prime is 145307377. The next prime is 145307401. The reversal of 145307383 is 383703541.

It is not a de Polignac number, because 145307383 - 2²¹ = 143210231 is a prime.

It is a super-2 number, since 2×145307383² = 42228471108617378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145307083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2462808 + ... + 2462866.

Almost surely, 2^145307383 is an apocalyptic number.

145307383 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145307383 is a deficient number, since it is larger than the sum of its proper divisors (23244217).

145307383 is an frugal number, since it uses more digits than its factorization.

145307383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 145307383 is about 12054.3512060998. The cubic root of 145307383 is about 525.7297582460.

The spelling of 145307383 in words is "one hundred forty-five million, three hundred seven thousand, three hundred eighty-three".