331140772 has 6 divisors (see below), whose sum is σ = 579496358. Its totient is φ = 165570384.

The previous prime is 331140769. The next prime is 331140809. The reversal of 331140772 is 277041133.

It can be written as a sum of positive squares in only one way, i.e., 276024996 + 55115776 = 16614^2 + 7424^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 331140772.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41392593 + ... + 41392600.

Almost surely, 2^331140772 is an apocalyptic number.

It is an amenable number.

331140772 is a deficient number, since it is larger than the sum of its proper divisors (248355586).

331140772 is a wasteful number, since it uses less digits than its factorization.

331140772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82785197 (or 82785195 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 331140772 is about 18197.2737518563. The cubic root of 331140772 is about 691.8376917832.

It can be divided in two parts, 33 and 1140772, that added together give a triangular number (1140805 = T₁₅₁₀).

The spelling of 331140772 in words is "three hundred thirty-one million, one hundred forty thousand, seven hundred seventy-two".