101431024649 has 2 divisors, whose sum is σ = 101431024650. Its totient is φ = 101431024648.

The previous prime is 101431024609. The next prime is 101431024687. The reversal of 101431024649 is 946420134101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69296877049 + 32134147600 = 263243^2 + 179260^2 .

It is a cyclic number.

It is not a de Polignac number, because 101431024649 - 2²⁸ = 101162589193 is a prime.

It is a super-2 number, since 2×101431024649² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101431024609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50715512324 + 50715512325.

It is an arithmetic number, because the mean of its divisors is an integer number (50715512325).

Almost surely, 2^101431024649 is an apocalyptic number.

It is an amenable number.

101431024649 is a deficient number, since it is larger than the sum of its proper divisors (1).

101431024649 is an equidigital number, since it uses as much as digits as its factorization.

101431024649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 101431024649 in words is "one hundred one billion, four hundred thirty-one million, twenty-four thousand, six hundred forty-nine".