140201031991 has 2 divisors, whose sum is σ = 140201031992. Its totient is φ = 140201031990.

The previous prime is 140201031979. The next prime is 140201032043. The reversal of 140201031991 is 199130102041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140201031991 is a prime.

It is a super-3 number, since 3×140201031991³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140201031931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70100515995 + 70100515996.

It is an arithmetic number, because the mean of its divisors is an integer number (70100515996).

Almost surely, 2^140201031991 is an apocalyptic number.

140201031991 is a deficient number, since it is larger than the sum of its proper divisors (1).

140201031991 is an equidigital number, since it uses as much as digits as its factorization.

140201031991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 140201031991 in words is "one hundred forty billion, two hundred one million, thirty-one thousand, nine hundred ninety-one".