31434213321245 has 16 divisors (see below), whose sum is σ = 43131025176960. Its totient is φ = 21544265680704.

The previous prime is 31434213321241. The next prime is 31434213321289. The reversal of 31434213321245 is 54212331243413.

It is a cyclic number.

It is not a de Polignac number, because 31434213321245 - 2² = 31434213321241 is a prime.

It is a super-2 number, since 2×31434213321245² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31434213321199 and 31434213321208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434213321241) 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, 221249927 + ... + 221391956.

It is an arithmetic number, because the mean of its divisors is an integer number (2695689073560).

Almost surely, 2^{31434213321245} is an apocalyptic number.

31434213321245 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31434213321245 is a deficient number, since it is larger than the sum of its proper divisors (11696811855715).

31434213321245 is a wasteful number, since it uses less digits than its factorization.

31434213321245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442643924.

The product of its digits is 207360, while the sum is 38.

Adding to 31434213321245 its reverse (54212331243413), we get a palindrome (85646544564658).

The spelling of 31434213321245 in words is "thirty-one trillion, four hundred thirty-four billion, two hundred thirteen million, three hundred twenty-one thousand, two hundred forty-five".