145870397031 has 8 divisors (see below), whose sum is σ = 199750453744. Its totient is φ = 94618635840.

The previous prime is 145870397027. The next prime is 145870397053. The reversal of 145870397031 is 130793078541.

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

It is not a de Polignac number, because 145870397031 - 2² = 145870397027 is a prime.

It is a super-2 number, since 2×145870397031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145870398031) 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, 657073750 + ... + 657073971.

It is an arithmetic number, because the mean of its divisors is an integer number (24968806718).

Almost surely, 2^145870397031 is an apocalyptic number.

145870397031 is a deficient number, since it is larger than the sum of its proper divisors (53880056713).

145870397031 is a wasteful number, since it uses less digits than its factorization.

145870397031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314147761.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 145870397031 in words is "one hundred forty-five billion, eight hundred seventy million, three hundred ninety-seven thousand, thirty-one".