145702031 has 4 divisors (see below), whose sum is σ = 145791000. Its totient is φ = 145613064.

The previous prime is 145702027. The next prime is 145702043. The reversal of 145702031 is 130207541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145702031 - 2² = 145702027 is a prime.

It is a super-2 number, since 2×145702031² = 42458163675049922, 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 = 145701988 and 145702006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145702001) 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, 41981 + ... + 45318.

It is an arithmetic number, because the mean of its divisors is an integer number (36447750).

Almost surely, 2^145702031 is an apocalyptic number.

145702031 is a deficient number, since it is larger than the sum of its proper divisors (88969).

145702031 is an equidigital number, since it uses as much as digits as its factorization.

145702031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88968.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 145702031 is about 12070.7096311692. The cubic root of 145702031 is about 526.2052804175.

Adding to 145702031 its reverse (130207541), we get a palindrome (275909572).

The spelling of 145702031 in words is "one hundred forty-five million, seven hundred two thousand, thirty-one".