101013042391 has 2 divisors, whose sum is σ = 101013042392. Its totient is φ = 101013042390.

The previous prime is 101013042341. The next prime is 101013042419. The reversal of 101013042391 is 193240310101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101013042391 - 2²⁷ = 100878824663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101013042311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50506521195 + 50506521196.

It is an arithmetic number, because the mean of its divisors is an integer number (50506521196).

Almost surely, 2^101013042391 is an apocalyptic number.

101013042391 is a deficient number, since it is larger than the sum of its proper divisors (1).

101013042391 is an equidigital number, since it uses as much as digits as its factorization.

101013042391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 101013042391 its reverse (193240310101), we get a palindrome (294253352492).

The spelling of 101013042391 in words is "one hundred one billion, thirteen million, forty-two thousand, three hundred ninety-one".