100545511531 has 2 divisors, whose sum is σ = 100545511532. Its totient is φ = 100545511530.

The previous prime is 100545511499. The next prime is 100545511543. The reversal of 100545511531 is 135115545001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100545511531 - 2⁵ = 100545511499 is a prime.

It is a super-2 number, since 2×100545511531² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100545511493 and 100545511502.

It is not a weakly prime, because it can be changed into another prime (100545511571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50272755765 + 50272755766.

It is an arithmetic number, because the mean of its divisors is an integer number (50272755766).

Almost surely, 2^100545511531 is an apocalyptic number.

100545511531 is a deficient number, since it is larger than the sum of its proper divisors (1).

100545511531 is an equidigital number, since it uses as much as digits as its factorization.

100545511531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 31.

The spelling of 100545511531 in words is "one hundred billion, five hundred forty-five million, five hundred eleven thousand, five hundred thirty-one".