1210213131 has 8 divisors (see below), whose sum is σ = 1657228944. Its totient is φ = 785003040.

The previous prime is 1210213117. The next prime is 1210213141. The reversal of 1210213131 is 1313120121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1210213131 - 2⁷ = 1210213003 is a prime.

It is a super-2 number, since 2×1210213131² = 2929231644889646322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1210213131.

It is not an unprimeable number, because it can be changed into a prime (1210213141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5451300 + ... + 5451521.

It is an arithmetic number, because the mean of its divisors is an integer number (207153618).

Almost surely, 2^1210213131 is an apocalyptic number.

1210213131 is a deficient number, since it is larger than the sum of its proper divisors (447015813).

1210213131 is a wasteful number, since it uses less digits than its factorization.

1210213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10902861.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1210213131 is about 34788.1176696872. The cubic root of 1210213131 is about 1065.6647986225.

Adding to 1210213131 its reverse (1313120121), we get a palindrome (2523333252).

The spelling of 1210213131 in words is "one billion, two hundred ten million, two hundred thirteen thousand, one hundred thirty-one".