31423355153242 has 16 divisors (see below), whose sum is σ = 50899117312512. Its totient is φ = 14463569041200.

The previous prime is 31423355153159. The next prime is 31423355153249. The reversal of 31423355153242 is 24235155332413.

It is a super-2 number, since 2×31423355153242² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31423355153249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1646571634 + ... + 1646590717.

It is an arithmetic number, because the mean of its divisors is an integer number (3181194832032).

Almost surely, 2^{31423355153242} is an apocalyptic number.

31423355153242 is a deficient number, since it is larger than the sum of its proper divisors (19475762159270).

31423355153242 is a wasteful number, since it uses less digits than its factorization.

31423355153242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293162733.

The product of its digits is 1296000, while the sum is 43.

The spelling of 31423355153242 in words is "thirty-one trillion, four hundred twenty-three billion, three hundred fifty-five million, one hundred fifty-three thousand, two hundred forty-two".