1141971231 has 16 divisors (see below), whose sum is σ = 1633011840. Its totient is φ = 707634720.

The previous prime is 1141971227. The next prime is 1141971241. The reversal of 1141971231 is 1321791411.

It is not a de Polignac number, because 1141971231 - 2² = 1141971227 is a prime.

It is a super-2 number, since 2×1141971231² = 2608196584863310722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141971241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185985 + ... + 192026.

It is an arithmetic number, because the mean of its divisors is an integer number (102063240).

Almost surely, 2^1141971231 is an apocalyptic number.

1141971231 is a deficient number, since it is larger than the sum of its proper divisors (491040609).

1141971231 is a wasteful number, since it uses less digits than its factorization.

1141971231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378086.

The product of its digits is 1512, while the sum is 30.

The square root of 1141971231 is about 33793.0648358506. The cubic root of 1141971231 is about 1045.2456954548.

The spelling of 1141971231 in words is "one billion, one hundred forty-one million, nine hundred seventy-one thousand, two hundred thirty-one".