1331945030 has 64 divisors (see below), whose sum is σ = 2726136000. Its totient is φ = 464486400.

The previous prime is 1331945023. The next prime is 1331945047. The reversal of 1331945030 is 305491331.

It is a junction number, because it is equal to n+sod(n) for n = 1331944984 and 1331945002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1108430 + ... + 1109630.

It is an arithmetic number, because the mean of its divisors is an integer number (42595875).

Almost surely, 2^1331945030 is an apocalyptic number.

1331945030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1331945030 is an abundant number, since it is smaller than the sum of its proper divisors (1394190970).

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

1331945030 is a wasteful number, since it uses less digits than its factorization.

1331945030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 1331945030 is about 36495.8220896584. The cubic root of 1331945030 is about 1100.2602772524.

The spelling of 1331945030 in words is "one billion, three hundred thirty-one million, nine hundred forty-five thousand, thirty".