1983957131 has 8 divisors (see below), whose sum is σ = 2194314864. Its totient is φ = 1781848800.

The previous prime is 1983957119. The next prime is 1983957149. The reversal of 1983957131 is 1317593891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1983957131 is a prime.

It is a super-2 number, since 2×1983957131² = 7872171795291502322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1983950131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2061845 + ... + 2062806.

It is an arithmetic number, because the mean of its divisors is an integer number (274289358).

Almost surely, 2^1983957131 is an apocalyptic number.

1983957131 is a deficient number, since it is larger than the sum of its proper divisors (210357733).

1983957131 is a wasteful number, since it uses less digits than its factorization.

1983957131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4124701.

The product of its digits is 204120, while the sum is 47.

The square root of 1983957131 is about 44541.6336813099. The cubic root of 1983957131 is about 1256.5432106328.

The spelling of 1983957131 in words is "one billion, nine hundred eighty-three million, nine hundred fifty-seven thousand, one hundred thirty-one".