231213035 has 32 divisors (see below), whose sum is σ = 295004160. Its totient is φ = 173721600.

The previous prime is 231213023. The next prime is 231213041. The reversal of 231213035 is 530312132.

It is not a de Polignac number, because 231213035 - 2⁴ = 231213019 is a prime.

It is a super-2 number, since 2×231213035² = 106918935107822450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231212998 and 231213016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197899 + ... + 1198091.

It is an arithmetic number, because the mean of its divisors is an integer number (9218880).

Almost surely, 2^231213035 is an apocalyptic number.

231213035 is a deficient number, since it is larger than the sum of its proper divisors (63791125).

231213035 is a wasteful number, since it uses less digits than its factorization.

231213035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 231213035 is about 15205.6908754584. The cubic root of 231213035 is about 613.7678062924.

Adding to 231213035 its reverse (530312132), we get a palindrome (761525167).

The spelling of 231213035 in words is "two hundred thirty-one million, two hundred thirteen thousand, thirty-five".