1031213388 has 24 divisors (see below), whose sum is σ = 2483783680. Its totient is φ = 332649360.

The previous prime is 1031213377. The next prime is 1031213389. The reversal of 1031213388 is 8833121301.

It is not an unprimeable number, because it can be changed into a prime (1031213389) 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, 1385668 + ... + 1386411.

Almost surely, 2^1031213388 is an apocalyptic number.

It is an amenable number.

1031213388 is an abundant number, since it is smaller than the sum of its proper divisors (1452570292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031213388 is a wasteful number, since it uses less digits than its factorization.

1031213388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772117 (or 2772115 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1031213388 is about 32112.5113935363. The cubic root of 1031213388 is about 1010.2980488218.

Adding to 1031213388 its reverse (8833121301), we get a palindrome (9864334689).

The spelling of 1031213388 in words is "one billion, thirty-one million, two hundred thirteen thousand, three hundred eighty-eight".