31242016065091 has 16 divisors (see below), whose sum is σ = 33673469697504. Its totient is φ = 28814597374464.

The previous prime is 31242016065061. The next prime is 31242016065101. The reversal of 31242016065091 is 19056061024213.

It is a cyclic number.

It is not a de Polignac number, because 31242016065091 - 2⁵ = 31242016065059 is a prime.

It is a super-2 number, since 2×31242016065091² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31242016065061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260123145 + ... + 260243221.

It is an arithmetic number, because the mean of its divisors is an integer number (2104591856094).

Almost surely, 2^{31242016065091} is an apocalyptic number.

31242016065091 is a deficient number, since it is larger than the sum of its proper divisors (2431453632413).

31242016065091 is a wasteful number, since it uses less digits than its factorization.

31242016065091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136710.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 31242016065091 in words is "thirty-one trillion, two hundred forty-two billion, sixteen million, sixty-five thousand, ninety-one".