1631230542 has 32 divisors (see below), whose sum is σ = 3709263360. Its totient is φ = 531097560.

The previous prime is 1631230519. The next prime is 1631230543. The reversal of 1631230542 is 2450321361.

1631230542 is a `hidden beast` number, since 1 + 6 + 312 + 305 + 42 = 666.

It is a super-2 number, since 2×1631230542² = 5321826162307227528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631230543) 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, 348934 + ... + 353577.

It is an arithmetic number, because the mean of its divisors is an integer number (115914480).

Almost surely, 2^1631230542 is an apocalyptic number.

1631230542 is an abundant number, since it is smaller than the sum of its proper divisors (2078032818).

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

1631230542 is a wasteful number, since it uses less digits than its factorization.

1631230542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702565 (or 702559 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1631230542 is about 40388.4951687978. The cubic root of 1631230542 is about 1177.1680008468.

The spelling of 1631230542 in words is "one billion, six hundred thirty-one million, two hundred thirty thousand, five hundred forty-two".