771126131 has 2 divisors, whose sum is σ = 771126132. Its totient is φ = 771126130.

The previous prime is 771126121. The next prime is 771126143. The reversal of 771126131 is 131621177.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 771126131 - 2¹⁴ = 771109747 is a prime.

It is a super-2 number, since 2×771126131² = 1189271019822058322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 771126094 and 771126103.

It is not a weakly prime, because it can be changed into another prime (771126121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385563065 + 385563066.

It is an arithmetic number, because the mean of its divisors is an integer number (385563066).

Almost surely, 2^771126131 is an apocalyptic number.

771126131 is a deficient number, since it is larger than the sum of its proper divisors (1).

771126131 is an equidigital number, since it uses as much as digits as its factorization.

771126131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 29.

The square root of 771126131 is about 27769.1579094505. The cubic root of 771126131 is about 917.0122559128.

The spelling of 771126131 in words is "seven hundred seventy-one million, one hundred twenty-six thousand, one hundred thirty-one".