312211213532 has 24 divisors (see below), whose sum is σ = 547987059312. Its totient is φ = 155644070400.

The previous prime is 312211213529. The next prime is 312211213537. The reversal of 312211213532 is 235312112213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312211213537) 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, 2073932 + ... + 2219372.

It is an arithmetic number, because the mean of its divisors is an integer number (22832794138).

Almost surely, 2^312211213532 is an apocalyptic number.

It is an amenable number.

312211213532 is a deficient number, since it is larger than the sum of its proper divisors (235775845780).

312211213532 is a wasteful number, since it uses less digits than its factorization.

312211213532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147029 (or 147027 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

Adding to 312211213532 its reverse (235312112213), we get a palindrome (547523325745).

The spelling of 312211213532 in words is "three hundred twelve billion, two hundred eleven million, two hundred thirteen thousand, five hundred thirty-two".