2172346531 has 2 divisors, whose sum is σ = 2172346532. Its totient is φ = 2172346530.

The previous prime is 2172346511. The next prime is 2172346537. The reversal of 2172346531 is 1356432712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2172346531 - 2⁵ = 2172346499 is a prime.

It is a super-2 number, since 2×2172346531² = 9438178901495467922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2172346537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086173265 + 1086173266.

It is an arithmetic number, because the mean of its divisors is an integer number (1086173266).

Almost surely, 2^2172346531 is an apocalyptic number.

2172346531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172346531 is an equidigital number, since it uses as much as digits as its factorization.

2172346531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 2172346531 is about 46608.4384097987. The cubic root of 2172346531 is about 1295.1190800989.

The spelling of 2172346531 in words is "two billion, one hundred seventy-two million, three hundred forty-six thousand, five hundred thirty-one".