234311131009 has 2 divisors, whose sum is σ = 234311131010. Its totient is φ = 234311131008.

The previous prime is 234311131003. The next prime is 234311131069. The reversal of 234311131009 is 900131113432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158187561984 + 76123569025 = 397728^2 + 275905^2 .

It is a cyclic number.

It is not a de Polignac number, because 234311131009 - 2³ = 234311131001 is a prime.

It is a super-2 number, since 2×234311131009² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (234311131001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117155565504 + 117155565505.

It is an arithmetic number, because the mean of its divisors is an integer number (117155565505).

Almost surely, 2^234311131009 is an apocalyptic number.

It is an amenable number.

234311131009 is a deficient number, since it is larger than the sum of its proper divisors (1).

234311131009 is an equidigital number, since it uses as much as digits as its factorization.

234311131009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

It can be divided in two parts, 23431 and 1131009, that added together give a triangular number (1154440 = T₁₅₁₉).

The spelling of 234311131009 in words is "two hundred thirty-four billion, three hundred eleven million, one hundred thirty-one thousand, nine".