140102312 has 64 divisors (see below), whose sum is σ = 307722240. Its totient is φ = 58564800.

The previous prime is 140102311. The next prime is 140102327. The reversal of 140102312 is 213201041.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (140102311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 663887 + ... + 664097.

It is an arithmetic number, because the mean of its divisors is an integer number (4808160).

Almost surely, 2^140102312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140102312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153861120).

140102312 is an abundant number, since it is smaller than the sum of its proper divisors (167619928).

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

140102312 is a wasteful number, since it uses less digits than its factorization.

140102312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 140102312 is about 11836.4822476950. The cubic root of 140102312 is about 519.3758685412.

Adding to 140102312 its reverse (213201041), we get a palindrome (353303353).

The spelling of 140102312 in words is "one hundred forty million, one hundred two thousand, three hundred twelve".