101561316331 has 2 divisors, whose sum is σ = 101561316332. Its totient is φ = 101561316330.

The previous prime is 101561316293. The next prime is 101561316359. The reversal of 101561316331 is 133613165101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101561316331 - 2¹³ = 101561308139 is a prime.

It is a super-2 number, since 2×101561316331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101561316293 and 101561316302.

It is not a weakly prime, because it can be changed into another prime (101561316631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50780658165 + 50780658166.

It is an arithmetic number, because the mean of its divisors is an integer number (50780658166).

Almost surely, 2^101561316331 is an apocalyptic number.

101561316331 is a deficient number, since it is larger than the sum of its proper divisors (1).

101561316331 is an equidigital number, since it uses as much as digits as its factorization.

101561316331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The spelling of 101561316331 in words is "one hundred one billion, five hundred sixty-one million, three hundred sixteen thousand, three hundred thirty-one".