143137857861731 has 2 divisors, whose sum is σ = 143137857861732. Its totient is φ = 143137857861730.

The previous prime is 143137857861707. The next prime is 143137857861743. The reversal of 143137857861731 is 137168758731341.

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-143137857861731 is a prime.

It is a super-2 number, since 2×143137857861731² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (143137857861751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71568928930865 + 71568928930866.

It is an arithmetic number, because the mean of its divisors is an integer number (71568928930866).

Almost surely, 2^{143137857861731} is an apocalyptic number.

143137857861731 is a deficient number, since it is larger than the sum of its proper divisors (1).

143137857861731 is an equidigital number, since it uses as much as digits as its factorization.

143137857861731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71124480, while the sum is 65.

The spelling of 143137857861731 in words is "one hundred forty-three trillion, one hundred thirty-seven billion, eight hundred fifty-seven million, eight hundred sixty-one thousand, seven hundred thirty-one".