140233381 has 2 divisors, whose sum is σ = 140233382. Its totient is φ = 140233380.

The previous prime is 140233361. The next prime is 140233393. The reversal of 140233381 is 183332041.

140233381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97121025 + 43112356 = 9855^2 + 6566^2 .

It is an emirp because it is prime and its reverse (183332041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140233381 - 2⁷ = 140233253 is a prime.

It is a super-2 number, since 2×140233381² = 39330802293382322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140233361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70116690 + 70116691.

It is an arithmetic number, because the mean of its divisors is an integer number (70116691).

Almost surely, 2^140233381 is an apocalyptic number.

It is an amenable number.

140233381 is a deficient number, since it is larger than the sum of its proper divisors (1).

140233381 is an equidigital number, since it uses as much as digits as its factorization.

140233381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 140233381 is about 11842.0176068101. The cubic root of 140233381 is about 519.5377808310.

The spelling of 140233381 in words is "one hundred forty million, two hundred thirty-three thousand, three hundred eighty-one".