140098531 has 2 divisors, whose sum is σ = 140098532. Its totient is φ = 140098530.

The previous prime is 140098523. The next prime is 140098537. The reversal of 140098531 is 135890041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140098531 - 2³ = 140098523 is a prime.

It is a super-2 number, since 2×140098531² = 39255196776715922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140098493 and 140098502.

It is not a weakly prime, because it can be changed into another prime (140098537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70049265 + 70049266.

It is an arithmetic number, because the mean of its divisors is an integer number (70049266).

Almost surely, 2^140098531 is an apocalyptic number.

140098531 is a deficient number, since it is larger than the sum of its proper divisors (1).

140098531 is an equidigital number, since it uses as much as digits as its factorization.

140098531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 140098531 is about 11836.3225285559. The cubic root of 140098531 is about 519.3711962942.

The spelling of 140098531 in words is "one hundred forty million, ninety-eight thousand, five hundred thirty-one".