1031213243 has 8 divisors (see below), whose sum is σ = 1035657408. Its totient is φ = 1026777024.

The previous prime is 1031213219. The next prime is 1031213279. The reversal of 1031213243 is 3423121301.

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

It is a cyclic number.

It is not a de Polignac number, because 1031213243 - 2¹² = 1031209147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031215243) 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, 498830 + ... + 500892.

It is an arithmetic number, because the mean of its divisors is an integer number (129457176).

Almost surely, 2^1031213243 is an apocalyptic number.

1031213243 is a deficient number, since it is larger than the sum of its proper divisors (4444165).

1031213243 is a wasteful number, since it uses less digits than its factorization.

1031213243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1031213243 is about 32112.5091358492. The cubic root of 1031213243 is about 1010.2980014687.

Adding to 1031213243 its reverse (3423121301), we get a palindrome (4454334544).

The spelling of 1031213243 in words is "one billion, thirty-one million, two hundred thirteen thousand, two hundred forty-three".