231661214202 has 16 divisors (see below), whose sum is σ = 505442649312. Its totient is φ = 70200367920.

The previous prime is 231661214201. The next prime is 231661214237. The reversal of 231661214202 is 202412166132.

It is a self number, because there is not a number n which added to its sum of digits gives 231661214202.

It is not an unprimeable number, because it can be changed into a prime (231661214201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1755009133 + ... + 1755009264.

It is an arithmetic number, because the mean of its divisors is an integer number (31590165582).

Almost surely, 2^231661214202 is an apocalyptic number.

231661214202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231661214202 is an abundant number, since it is smaller than the sum of its proper divisors (273781435110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231661214202 is a wasteful number, since it uses less digits than its factorization.

231661214202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510018413.

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 231661214202 in words is "two hundred thirty-one billion, six hundred sixty-one million, two hundred fourteen thousand, two hundred two".