240020410133431 has 2 divisors, whose sum is σ = 240020410133432. Its totient is φ = 240020410133430.

The previous prime is 240020410133393. The next prime is 240020410133443. The reversal of 240020410133431 is 134331014020042.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240020410133431 is a prime.

It is a super-4 number, since 4×240020410133431⁴ (a number of 59 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 240020410133431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240020410133731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120010205066715 + 120010205066716.

It is an arithmetic number, because the mean of its divisors is an integer number (120010205066716).

Almost surely, 2^{240020410133431} is an apocalyptic number.

240020410133431 is a deficient number, since it is larger than the sum of its proper divisors (1).

240020410133431 is an equidigital number, since it uses as much as digits as its factorization.

240020410133431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 240020410133431 its reverse (134331014020042), we get a palindrome (374351424153473).

The spelling of 240020410133431 in words is "two hundred forty trillion, twenty billion, four hundred ten million, one hundred thirty-three thousand, four hundred thirty-one".