145700381731 has 2 divisors, whose sum is σ = 145700381732. Its totient is φ = 145700381730.

The previous prime is 145700381719. The next prime is 145700381741. The reversal of 145700381731 is 137183007541.

It is a strong prime.

It is an emirp because it is prime and its reverse (137183007541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145700381731 - 2⁵ = 145700381699 is a prime.

It is a super-2 number, since 2×145700381731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145700381711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72850190865 + 72850190866.

It is an arithmetic number, because the mean of its divisors is an integer number (72850190866).

Almost surely, 2^145700381731 is an apocalyptic number.

145700381731 is a deficient number, since it is larger than the sum of its proper divisors (1).

145700381731 is an equidigital number, since it uses as much as digits as its factorization.

145700381731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 145700381731 in words is "one hundred forty-five billion, seven hundred million, three hundred eighty-one thousand, seven hundred thirty-one".