3129550340 has 24 divisors (see below), whose sum is σ = 7510921152. Its totient is φ = 1072988640.

The previous prime is 3129550337. The next prime is 3129550351. The reversal of 3129550340 is 430559213.

It is a junction number, because it is equal to n+sod(n) for n = 3129550297 and 3129550306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11176826 + ... + 11177105.

It is an arithmetic number, because the mean of its divisors is an integer number (312955048).

Almost surely, 2^3129550340 is an apocalyptic number.

It is an amenable number.

3129550340 is an abundant number, since it is smaller than the sum of its proper divisors (4381370812).

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

3129550340 is a wasteful number, since it uses less digits than its factorization.

3129550340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22353947 (or 22353945 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 3129550340 is about 55942.3841107974. The cubic root of 3129550340 is about 1462.7181396194.

The spelling of 3129550340 in words is "three billion, one hundred twenty-nine million, five hundred fifty thousand, three hundred forty".