2157031467 has 6 divisors (see below), whose sum is σ = 3115712132. Its totient is φ = 1438020972.

The previous prime is 2157031423. The next prime is 2157031469. The reversal of 2157031467 is 7641307512.

It is a happy number.

2157031467 is a `hidden beast` number, since 21 + 570 + 3 + 1 + 4 + 67 = 666.

It is not a de Polignac number, because 2157031467 - 2⁸ = 2157031211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157031469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 119835073 + ... + 119835090.

Almost surely, 2^2157031467 is an apocalyptic number.

2157031467 is a deficient number, since it is larger than the sum of its proper divisors (958680665).

2157031467 is a wasteful number, since it uses less digits than its factorization.

2157031467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239670169 (or 239670166 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 2157031467 is about 46443.8528440525. The cubic root of 2157031467 is about 1292.0683656358.

Adding to 2157031467 its reverse (7641307512), we get a palindrome (9798338979).

The spelling of 2157031467 in words is "two billion, one hundred fifty-seven million, thirty-one thousand, four hundred sixty-seven".