245131230434381 has 2 divisors, whose sum is σ = 245131230434382. Its totient is φ = 245131230434380.

The previous prime is 245131230434341. The next prime is 245131230434423. The reversal of 245131230434381 is 183434032131542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156167285949481 + 88963944484900 = 12496691^2 + 9432070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245131230434381 is a prime.

It is a super-2 number, since 2×245131230434381² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245131230434341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122565615217190 + 122565615217191.

It is an arithmetic number, because the mean of its divisors is an integer number (122565615217191).

Almost surely, 2^{245131230434381} is an apocalyptic number.

It is an amenable number.

245131230434381 is a deficient number, since it is larger than the sum of its proper divisors (1).

245131230434381 is an equidigital number, since it uses as much as digits as its factorization.

245131230434381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 245131230434381 in words is "two hundred forty-five trillion, one hundred thirty-one billion, two hundred thirty million, four hundred thirty-four thousand, three hundred eighty-one".