140531099 has 4 divisors (see below), whose sum is σ = 140654136. Its totient is φ = 140408064.

The previous prime is 140531077. The next prime is 140531113. The reversal of 140531099 is 990135041.

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 140531099 - 2¹² = 140527003 is a prime.

It is a super-2 number, since 2×140531099² = 39497979572295602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140531899) 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, 59789 + ... + 62094.

It is an arithmetic number, because the mean of its divisors is an integer number (35163534).

Almost surely, 2^140531099 is an apocalyptic number.

140531099 is a deficient number, since it is larger than the sum of its proper divisors (123037).

140531099 is a wasteful number, since it uses less digits than its factorization.

140531099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123036.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 140531099 is about 11854.5813506846. The cubic root of 140531099 is about 519.9051836492.

The spelling of 140531099 in words is "one hundred forty million, five hundred thirty-one thousand, ninety-nine".