101020091131 has 2 divisors, whose sum is σ = 101020091132. Its totient is φ = 101020091130.

The previous prime is 101020091071. The next prime is 101020091197. The reversal of 101020091131 is 131190020101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101020091131 is a prime.

It is a super-2 number, since 2×101020091131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101020091099 and 101020091108.

It is not a weakly prime, because it can be changed into another prime (101020091531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510045565 + 50510045566.

It is an arithmetic number, because the mean of its divisors is an integer number (50510045566).

Almost surely, 2^101020091131 is an apocalyptic number.

101020091131 is a deficient number, since it is larger than the sum of its proper divisors (1).

101020091131 is an equidigital number, since it uses as much as digits as its factorization.

101020091131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

The spelling of 101020091131 in words is "one hundred one billion, twenty million, ninety-one thousand, one hundred thirty-one".