1031223402 has 48 divisors (see below), whose sum is σ = 2444146848. Its totient is φ = 311631840.

The previous prime is 1031223397. The next prime is 1031223407. The reversal of 1031223402 is 2043221301.

1031223402 is a `hidden beast` number, since 10 + 31 + 223 + 402 = 666.

It is an interprime number because it is at equal distance from previous prime (1031223397) and next prime (1031223407).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1031223407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66873 + ... + 80835.

It is an arithmetic number, because the mean of its divisors is an integer number (50919726).

Almost surely, 2^1031223402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031223402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222073424).

1031223402 is an abundant number, since it is smaller than the sum of its proper divisors (1412923446).

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

1031223402 is a wasteful number, since it uses less digits than its factorization.

1031223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14355 (or 14352 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1031223402 is about 32112.6673136941. The cubic root of 1031223402 is about 1010.3013191090.

Adding to 1031223402 its reverse (2043221301), we get a palindrome (3074444703).

The spelling of 1031223402 in words is "one billion, thirty-one million, two hundred twenty-three thousand, four hundred two".