242651131 has 2 divisors, whose sum is σ = 242651132. Its totient is φ = 242651130.

The previous prime is 242651099. The next prime is 242651221. The reversal of 242651131 is 131156242.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242651131 - 2⁵ = 242651099 is a prime.

It is a super-2 number, since 2×242651131² = 117759142751158322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242651096 and 242651105.

It is not a weakly prime, because it can be changed into another prime (242651231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121325565 + 121325566.

It is an arithmetic number, because the mean of its divisors is an integer number (121325566).

Almost surely, 2^242651131 is an apocalyptic number.

242651131 is a deficient number, since it is larger than the sum of its proper divisors (1).

242651131 is an equidigital number, since it uses as much as digits as its factorization.

242651131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 242651131 is about 15577.2632705492. The cubic root of 242651131 is about 623.7263714756.

The spelling of 242651131 in words is "two hundred forty-two million, six hundred fifty-one thousand, one hundred thirty-one".