1031155420 has 24 divisors (see below), whose sum is σ = 2168510400. Its totient is φ = 411874752.

The previous prime is 1031155399. The next prime is 1031155423. The reversal of 1031155420 is 245511301.

It is a happy number.

1031155420 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1031155391 and 1031155400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031155423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22180 + ... + 50539.

It is an arithmetic number, because the mean of its divisors is an integer number (90354600).

Almost surely, 2^1031155420 is an apocalyptic number.

1031155420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031155420 is an abundant number, since it is smaller than the sum of its proper divisors (1137354980).

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

1031155420 is a wasteful number, since it uses less digits than its factorization.

1031155420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73437 (or 73435 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1031155420 is about 32111.6088042938. The cubic root of 1031155420 is about 1010.2791177077.

Adding to 1031155420 its reverse (245511301), we get a palindrome (1276666721).

The spelling of 1031155420 in words is "one billion, thirty-one million, one hundred fifty-five thousand, four hundred twenty".