140031000 has 96 divisors (see below), whose sum is σ = 473335200. Its totient is φ = 37339200.

The previous prime is 140030993. The next prime is 140031019. The reversal of 140031000 is 130041.

It is a super-2 number, since 2×140031000² = 39217361922000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1221 + ... + 16779.

It is an arithmetic number, because the mean of its divisors is an integer number (4930575).

Almost surely, 2^140031000 is an apocalyptic number.

140031000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236667600).

140031000 is an abundant number, since it is smaller than the sum of its proper divisors (333304200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140031000 is a wasteful number, since it uses less digits than its factorization.

140031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15586 (or 15569 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 140031000 is about 11833.4694827848. The cubic root of 140031000 is about 519.2877329084.

Adding to 140031000 its reverse (130041), we get a palindrome (140161041).

It can be divided in two parts, 1400 and 31000, that added together give a square (32400 = 180²).

The spelling of 140031000 in words is "one hundred forty million, thirty-one thousand".