67121131 has 12 divisors (see below), whose sum is σ = 85178520. Its totient is φ = 52301760.

The previous prime is 67121101. The next prime is 67121143. The reversal of 67121131 is 13112176.

It is not a de Polignac number, because 67121131 - 2⁵ = 67121099 is a prime.

It is a super-2 number, since 2×67121131² = 9010492453438322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67121101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61726 + ... + 62803.

It is an arithmetic number, because the mean of its divisors is an integer number (7098210).

Almost surely, 2^67121131 is an apocalyptic number.

67121131 is a deficient number, since it is larger than the sum of its proper divisors (18057389).

67121131 is a wasteful number, since it uses less digits than its factorization.

67121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124554 (or 124547 counting only the distinct ones).

The product of its digits is 252, while the sum is 22.

The square root of 67121131 is about 8192.7486840498. The cubic root of 67121131 is about 406.3994285486.

The spelling of 67121131 in words is "sixty-seven million, one hundred twenty-one thousand, one hundred thirty-one".