31213212001003 has 16 divisors (see below), whose sum is σ = 33184822476960. Its totient is φ = 29306076307200.

The previous prime is 31213212000991. The next prime is 31213212001021. The reversal of 31213212001003 is 30010021231213.

It is a cyclic number.

It is not a de Polignac number, because 31213212001003 - 2²¹ = 31213209903851 is a prime.

It is a super-4 number, since 4×31213212001003⁴ (a number of 55 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31213212002003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42390108 + ... + 43120153.

It is an arithmetic number, because the mean of its divisors is an integer number (2074051404810).

Almost surely, 2^{31213212001003} is an apocalyptic number.

31213212001003 is a deficient number, since it is larger than the sum of its proper divisors (1971610475957).

31213212001003 is a wasteful number, since it uses less digits than its factorization.

31213212001003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85510638.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31213212001003 its reverse (30010021231213), we get a palindrome (61223233232216).

The spelling of 31213212001003 in words is "thirty-one trillion, two hundred thirteen billion, two hundred twelve million, one thousand, three".