2072156431 has 2 divisors, whose sum is σ = 2072156432. Its totient is φ = 2072156430.

The previous prime is 2072156419. The next prime is 2072156453. The reversal of 2072156431 is 1346512702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2072156431 - 2¹⁵ = 2072123663 is a prime.

It is a super-2 number, since 2×2072156431² = 8587664549069315522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2072156393 and 2072156402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2072156461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036078215 + 1036078216.

It is an arithmetic number, because the mean of its divisors is an integer number (1036078216).

Almost surely, 2^2072156431 is an apocalyptic number.

2072156431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2072156431 is an equidigital number, since it uses as much as digits as its factorization.

2072156431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2072156431 is about 45520.9449704199. The cubic root of 2072156431 is about 1274.8942997855.

The spelling of 2072156431 in words is "two billion, seventy-two million, one hundred fifty-six thousand, four hundred thirty-one".