1001401531511 has 2 divisors, whose sum is σ = 1001401531512. Its totient is φ = 1001401531510.

The previous prime is 1001401531433. The next prime is 1001401531553. The reversal of 1001401531511 is 1151351041001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001401531511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001401531561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500700765755 + 500700765756.

It is an arithmetic number, because the mean of its divisors is an integer number (500700765756).

Almost surely, 2^{1001401531511} is an apocalyptic number.

1001401531511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001401531511 is an equidigital number, since it uses as much as digits as its factorization.

1001401531511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 23.

Adding to 1001401531511 its reverse (1151351041001), we get a palindrome (2152752572512).

The spelling of 1001401531511 in words is "one trillion, one billion, four hundred one million, five hundred thirty-one thousand, five hundred eleven".