931220242022149 has 4 divisors (see below), whose sum is σ = 935396117547136. Its totient is φ = 927044366497164.

The previous prime is 931220242022131. The next prime is 931220242022209. The reversal of 931220242022149 is 941220242022139.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 931220242022149 - 2⁹ = 931220242021637 is a prime.

It is a super-2 number, since 2×931220242022149² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (931220242022549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087937762159 + ... + 2087937762604.

It is an arithmetic number, because the mean of its divisors is an integer number (233849029386784).

Almost surely, 2^{931220242022149} is an apocalyptic number.

It is an amenable number.

931220242022149 is a deficient number, since it is larger than the sum of its proper divisors (4175875524987).

931220242022149 is a wasteful number, since it uses less digits than its factorization.

931220242022149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175875524986.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 931220242022149 in words is "nine hundred thirty-one trillion, two hundred twenty billion, two hundred forty-two million, twenty-two thousand, one hundred forty-nine".