145710531 has 24 divisors (see below), whose sum is σ = 218439936. Its totient is φ = 93527280.

The previous prime is 145710493. The next prime is 145710547. The reversal of 145710531 is 135017541.

It is not a de Polignac number, because 145710531 - 2¹⁷ = 145579459 is a prime.

It is a super-2 number, since 2×145710531² = 42463117688603922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145710495 and 145710504.

It is not an unprimeable number, because it can be changed into a prime (145710431) 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, 24826 + ... + 30128.

It is an arithmetic number, because the mean of its divisors is an integer number (9101664).

Almost surely, 2^145710531 is an apocalyptic number.

145710531 is a deficient number, since it is larger than the sum of its proper divisors (72729405).

145710531 is a wasteful number, since it uses less digits than its factorization.

145710531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423 (or 5420 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 145710531 is about 12071.0617180097. The cubic root of 145710531 is about 526.2155128484.

The spelling of 145710531 in words is "one hundred forty-five million, seven hundred ten thousand, five hundred thirty-one".