145332231731 has 8 divisors (see below), whose sum is σ = 145975250784. Its totient is φ = 144689898240.

The previous prime is 145332231679. The next prime is 145332231757. The reversal of 145332231731 is 137132233541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145332231731 - 2²⁶ = 145265122867 is a prime.

It is a super-2 number, since 2×145332231731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145332231691 and 145332231700.

It is not an unprimeable number, because it can be changed into a prime (145332231431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255875 + ... + 596771.

It is an arithmetic number, because the mean of its divisors is an integer number (18246906348).

Almost surely, 2^145332231731 is an apocalyptic number.

145332231731 is a deficient number, since it is larger than the sum of its proper divisors (643019053).

145332231731 is a wasteful number, since it uses less digits than its factorization.

145332231731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342781.

The product of its digits is 45360, while the sum is 35.

The spelling of 145332231731 in words is "one hundred forty-five billion, three hundred thirty-two million, two hundred thirty-one thousand, seven hundred thirty-one".